Strava estimates that my average power for the ride was 218 watts. I would say it's probably a little low for sure, strava tends to be bad at estimates when you're riding on mostly flat terrain as well. On average it wasn't that far off, when compared to his actual power. The figures are probably in the right ballpark. 40 km in 2.5 hours and 16.6km in 50 minutes are slow. They oversold my power for their estimates... it's nice to think I did that effort but in reality at that point I was nowhere near it. Even before I had a power meter, it was neat to see what Strava estimated my output to be during a ride. We’re not really sure of the mindset of whoever it is behind the Digital EPO website. Without direct measurements, Strava estimated that my average power was 177 watts and total energy production was 1,328 kilojoules. Brilliant, well done Justin. This second test is more “real world” riding. Established in 2019, we are an aerodynamic apparel brand, dedicated to improving riders performance. I suspect that Strava’s power algorithm is intended to work within a range of “useful” power outputs. Using the power meter, both Strava and Golden Cheetah say that the average was 225 watts. E, is all over the place w/Strava, sometimes high, low, sometimes really close. QUESTION: I’ve been uploading my rides to Strava for a while now and it gives me estimated wattage, but it’s unclear to me if those numbers are any good or not compared to other riders.I’m doing ok with my times on some local segments, but what’s a good average wattage cycling in general? Add weighted_average_watts to the activity summary endpoint; Add documentation about the generic “with barometer” device. bike But today I noticed the STrava Sauce generated Critical Power calculations are incorrect. All in all, Strava performed fairly well. I'd say 60W at 20 kph is low but not by a lot. Is Strava as Accurate as a Power Meter. You can see this happening visually when you zoom in on the performance graph for a shorter segment. Strava members can plan routes, participate in motivating challenges, and join clubs. Why might Strava’s estimation be better on hills or repeated circuits? ... Of course, Strava can accurately count your watts by taking measured power data. You … Doesn't sound far off, I'm 81kg as well and at those speeds that power sounds close. I could find no apparent correlation between a specific factor and error, though. Once Strava’s power estimates have helped you get familiar with your relative power output in different situations, you should consider investing in a power meter for more accurate, real-time data on your performance on every ride, in all conditions. Until you can actually measure and see your power output in real-time on the bike, athletes should consider Strava’s post-workout analysis to be useful mostly for post-workout bragging (a valid and entertaining use, to be sure!). I went on zwift with their z power my power was also 76w and effort was 97w. I know that getting my weight up this hill requires about 600 watts at the given speed and grade, yet Strava calculates "416w". But if you’re going for a long, meandering weekend ride, expect your data to be less helpful the farther afield you go. Find peak power in your rides and runs. If you sign up for the premium program you get real-time, live monitoring. I discount those because they are exceptionally low wattage outputs and not worth considering. To give Stava’s estimator the best possible chance I weighed myself and my bike, fully equipped and with full water bottles, before starting the ride. Powertap average watts = 382. Was ... been happening. Wij willen hier een beschrijving geven, maar de site die u nu bekijkt staat dit niet toe. If you’re interested in getting faster, you’ll be fascinated by FASTER: Demystifying the Science of Triathlon Speed. Which was before I did some structured workouts and increased my overall power by a fair amount. My advice to the OP is disregard any power data you see in Strava. Press question mark to learn the rest of the keyboard shortcuts. The estimate MIGHT be close but it depends on your route and whether you did a sustained effort. Strava seems to have trouble with estimating very low efforts. That’s an overall power error of 7.9%. Strava is a wonderful social media site for endurance athletes to share their rides and runs, praise each others’ efforts, and try to poach the best times on specific routes around town. I have noticed in several places the power that Strava calculates on certain segments is too low. The biggest FTP boost I have ever had in Strava was the time the workout defaulted to my hybrid instead of my road bike. We have setup this club to bring our community together and offer exclusive previews, giveaways and discounts to our athletes. My fitness tracker estimates 750. (Since I use it primarily for tracking my running, that is what I’ll focus on in my review.) How to change km to miles on Strava on a desktop. One fully MTB weighing ~13kg and a gravel bike at ~8kg. Learn more about specific devices by checking out the pages below. Log in op de mobiele app en … If you're on a road bike those numbers are probably about right, if they're on a mountain bike they're on the low side but it's probably not by a factor of 2 unless the terrain is really tough or something. Strava = 30.1% under. Copyright © 2020 WattsBoard. Packed with great features such as Segments and Strava … While my tracker tends to overestimate. His time 9-52 for the 5.6km climb (with an average heart rate of 178bpm and an average power of 483 watts) put him 13th on the segment standings, with … Established in 2019, we are an aerodynamic apparel brand, dedicated to improving riders performance. My fitness tracker estimates 750. On a segment where my average power was under 100 watts, the estimator error fell to 21%, so that range is pretty versatile. Reading about calorie expenditure while cycling left me to believe that these numbers are really low? This indicates the power estimation on Strava gets shaky as the course accumulates variation. Terms of use | Privacy Policy. If I calculate the calorie expenditure based on the wattage for the second tour, I get 180. I average around 120W for about 28 kph. Join Strava to track your activities, analyze your performance, and follow friends. #StayAero If the athlete weight is known a running power estimation is available too! The chances of it reading "extremely low" but you're secretly Chris Froome are vanishingly small. 1. It was about as controlled an environment as you can get outside of a wind tunnel. September 5, 2014. We gaan er voor het gemak even vanuit dat je een smartphone hebt en een profiel hebt aangemaakt op Strava. The longest segment on the course is 6.8 miles. Strava seems to have trouble with estimating very low efforts. It’s possible that winds played a much more significant role on a course that didn’t loop, but I can’t eliminate the possibility of pavement conditions, either. I went out and ran my garmin with my Powertap P1 pedals for an hour, as well as had my phone on me. Is the guesstimate from Strava really that bad, or are my estimates just plain wrong? Is it because you're pedaling a little then coasting a lot? Strava will always have my power numbers lower than what the Garmin unit reads or what Garmin Connect says. Get started by signing up for free. Given measured power data, Strava said that my average power for the whole ride was 164 watts and produced a total of 1,233 kilojoules of energy. Strava is a great place to store your workout data, and the good news is that most big-name sports watches work with the service, enabling you to have your workout data appear in … Click to share on Facebook (Opens in new window), Click to share on Twitter (Opens in new window), Click to share on Pinterest (Opens in new window), Click to share on Reddit (Opens in new window). It's probably correct but since you probably will coast and not pedal all the time and taking breaks etc will lower the power. Strava's estimate is complete and utter garbage. I compared the Strava outputs for the overall ride and ride segments. bikes Breaking it down further, there were 69 unique user-designated segments on the route I took. Strava power estimates are notoriously inaccurate. vegan cyclist did a video comparing strava estimated power to some power meter. I changed the appropriate weight data before uploading the rides. While I've read that it can be inaccurate, I'm not sure how to interpret the results it's giving me. I’ve been a fan of Strava for a long time, as are hundreds of thousands of other cyclists, triathletes and runners. On a per-segment basis, the error in power estimation was 15.5%, which was double the previous test. So while the Strava algorithm passed, it hadn’t quite proven its versatility. It takes your measured performance (speed, distance, time), adds in some environmental factors (some actual, some assumed) and comes up with wattage numbers over the course of your ride. When that happened, Strava’s error was 120% and 400%. Climbers will be happy to learn that the Strava power estimator was very accurate on the climbs (a few category 4s and a category 3, per Strava’s mapping). If you're a Strava user, you have one of the most feature-packed and motivating fitness platforms at your fingertips. I decided to give it another go, this time over a hillier route with multiple changes in wind and road surface. It can be used to track all types of workouts, including cycling, running, walking, hiking, yoga, Peloton rides , strength training and more. Don't have a WattsBoard account yet? But I wondered just how accurate these power estimation algorithms are. You can find general information about the API here.All requests to the Strava API require authentication.We have a few standalone pages with additional information about our webhooks, activity uploads and rate limits. 100w for a 80kg rider at 16km/h sounds about right, 50 is low. Unless you're in the Alps. For example, please see: http://app.strava.com/segments/628116. In conclusion, it seems that Strava’s power estimation is in fact probably more helpful to triathletes than dedicated cyclists. But with climbing you can be more confident in your guesses of the forces. 80kg rider holding 320 watts travels at 39.5kph. There are two reasonable answers. I have two bikes set up on Strava. How Accurate Is Strava? Thrown out of this data set are two outliers that also reveal something informative. Strava overestimated power on 53 of 69 (76%) of segments, which suggests it will routinely pump up your ego (ironic, Strava, and diabolical! An average of 20 mph is good going on a full suss MTB but 340 Watts for an hour would put you at the top end of amateur racers. If you don't allow Strava to measure directly, Strava will estimate your … On a final note, those of you watching your calories may be interested to know that the estimation errors will spill over into this data as well. Strava: Zo werkt het! Paid for the premium version of Strava last year and it was telling me the previous year was my best year. bicycle The problem...none of the tools you're using are really built to diagnose data inconsistency. Strava's guesstimates are often very wrong as they don't allow for wind, momentum and probably assume you're on a road bike with a very aero position (I ride on the road and I used to hit about 170W estimated; turns out it's more like 220 now I have a power meter). Because the estimation process uses speed and weight compared to GPS distance instead of the power meter’s fixed sampling rate, the Strava estimation is going to miss moments of power variation. … Strava estimate = 710. Not with the free version — it displays a delayed average. We use cookies on our websites for a number of purposes, including analytics and performance, functionality and advertising. bicycling i.e the strava estimates should be closer there so we can probably safely assume these weren't climbs. I had similar results.. at 76w avg.. it goes very low when you are coasting. 0 Instead of repetitive laps, it was roughly 35 miles out and back. What you can do to get live Watts is to use another program (for example the one provided by your wattmeter) to record and view your data live — then export the track to strava … You'll need to do three things before Strava can estimate your power on a ride: Go to strava.com and enter your bike info under "My Gear" in your account settings. 60kg rider holding 240 watts travels at 37kph. Similar weight as you in 80kg and 5'8". Remarkably, the average length of the segments in this test was very close to those in the previous one, so the length of a Strava segment does not seem to be a factor in creating error. Then, using the Golden Cheetah ride editor I removed all power data and fed it into Strava as a different ride to allow it to estimate the power output. cycling, Press J to jump to the feed. Fitness trackers, well aren't...and Strava is Facebook for Bikes with segments. We have setup this club to bring our community together and offer exclusive previews, giveaways and discounts to our athletes. On March 4 Drake Deuel broke Mike Woods' Strava KOM on Maui's famed Haleakala road climb, which soars 9,700 vertical feet over 34.5 miles. With this knowledge on your side, you can make simple changes that add up to free speed and faster racing. Thes question to ask yourself is why Strava's numbers are so low. Conclusion There are so many variables at play in terms of estimating power that it will always be subject to error and Strava may well be using some extra cleverness in their power estimations to attempt to limit these errors and from looking at the effort comparisons they certainly … Now that I have a power meter, it's easy to see how big of an estimate they were off. You can read about my first test results here: “How Accurate Is Strava? I'd also take the power metrics reported by GC with a healthy degree of skepticism. For all intents and purposes, the site was a race car track. Discussion of everything bicycle related. #StayAero ). Second, these short courses help neutralize road and wind conditions, which removes some uncertainty from the data. Visually speaking, there’s a lot more “chop” to the estimated data. I've a question regarding the average wattage calculated by Strava. I came across this article a little while back. Don't bother taking anything Strava estimates as factual. Strava is an online workout log and social network. This makes sense. GPS watches, smart watches, cycling computers – pair them with Strava to sync your activities and get features you can use on the go. All rights reserved. Strava's estimate is complete and utter garbage. In those cases, I rode the segment at an average output of 20 watts or less. Go to Strava.com and log into your account. You're likely better off with a random number generator (fwiw I had a race a few years ago where I didn't swap over my PM and it estimated I held 440w for 90 mins...ha!). Made in Kansas City Kansas City Switching a ride between the two makes the average watt change easily by 40 or 50 sometimes. Add device_watts to athlete activities, which indicates if the source of the power data is a device or Strava’s estimate. So I tested Strava by comparing my power meter’s wattage data to Strava’s estimate of my power that was based only on GPS data. Strava estimate = 292. 4: Max Power (Sprint on the flat). In addition to power, there is Normalized Power, xPower, Pace (including GAP), Heart Rate, Cadence and VAM. I then compared estimates versus measurements on a per segment basis. In Faster, astronautical engineer and triathlon journalist Jim Gourley explores the science of triathlon to see what truly makes you faster—and busts the myths and doublespeak that waste your money and slow down your racing. When data from a power meter is not available, Strava can estimates power using information about an athlete's weight, speed, and elevation change. (as above – averaged the two) Powertap average watts = 980. Digital EPO. But I had this wonkiness with my 510 previously, however the wonkiness was consistent, Strava always stated things ~5-10 watts lower on both fronts. Strava = 38% under estimates are fair with lots of elevation involved. FACT: Sauce for Strava is rated at 1.21 gigascovilles. I'm 81kg and got the following results for some tours: 40km - 2.5h - 16 km/h average - 49W (this one might be skewed because I took a break without pausing the recording) 16.6km - 50min - 20km/h avg - 60W. Most consumer fitness trackers...are less 'fitness tracker', and more make-you-feel-better device. Is it because you're sick and therefore your HR is high and you ability to work is low....or is it because their algorithms are janky too. While my tracker tends to overestimate, I'd guess the truth lies somewhere in-between, at 300-400 calories, which would equal to 100-130W. Low Watts Low Socks is a cyclist from Auckland, Auckland, New Zealand. Other segments with larger error had no distinct feature to suggest the cause. They are low… Is Strava as Accurate as a Power Meter?”. bicycles On a segment where my average power was under 100 watts, the estimator error fell to 21%, so that range is pretty versatile. 100w for a 80kg rider at 16km/h sounds about right, 50 is low. estimates are much poorer on flat grounds due to large noise around the aero model. 2. Here are the charts. It’s mind-boggling to see the power output that pro cyclists and triathletes post there. That’s not bad—but it is more than double the error of the previous test. Tailwinds are also super helpful. After all, GPS data is less accurate and doesn’t account for the wind. Low Profile Chinese Spinal Technique Massage Chair with Concentrated Neck Only $1699.95 at Panasonic. The power used to overcome drag is eight times larger at 32kph than at 16. the equation is has less uncertainty against lifting against gravity. In depth details for peak efforts. If you have a favorite training ride that’s fairly repetitive—whether laps around a short, flat course or hill repeats—you’ll get accurate estimations of your performance. That’s an error of 3.1%. You're likely better off with a random number generator (fwiw I had a race a few years ago where I didn't swap over my PM and it estimated I held 440w for 90 mins...ha!). The 60kg rider would need to hold 288 watts (4.8w/kg) in order to keep up with the 80kg rider, if drafting isn’t taken into the equation. It's probably a little off but not too far. Strava overestimated power on 53 of 69 (76%) of segments, which suggests it will routinely pump up your ego (ironic, Strava, and diabolical!). First, repeating hills or riding the same loops several times gives Strava the opportunity to average your performances and come up with a more accurate, apples-to-apples estimation. As Rider_X mentioned above - the first lower limit will be the average power for the whole race (~1.5 hours), so your FTP will be higher than 230W (assuming the data is from the power meter and not a Strava estimate). Six key Strava training ... your form on the day will also be low. Is the guesstimate from Strava really that bad. It still tells me that I am slower and my efforts are low compared to their estimates from the previous year. It was much shorter than a typical Olympic triathlon bike course, let alone a 70.3 or Iron distance race. Unless you have a power meter, the power data on Strava is completely useless. This extension upgrades the Strava ... predictor is a great tool for calculating times i can expect from using the lighter race bike or those few extra watts. Strava calculates the overall power output of the rider and bike ‘system’ rather than the wattage generated at the cranks, pedals or hub (as would be the case when you use a power meter). But my test was on a flat course with multiple laps through brisk-yet-constant winds. First, overall data. It is way too assumption dependent to be useful. The next lower limit will be your average power … But no offence, 16-20kph is very slow. Sign up! Select "Settings," which is located underneath your profile picture at the top right corner. New to the Strava API? Longer rides give you more opportunities for your performance to be influenced by the wind and other conditions, which Strava’s power estimates will miss. But pwople say its very imaccurate but for me it wad kinda accurate. Not too shabby! bikeit! Drilling further into error on individual segments, the greatest error was 34.4% and the lowest was 1.9%. The test method was the same as before: I uploaded the ride data simultaneously to Golden Cheetah and Strava. So Strava’s power estimation for this effort has a very low gradient which accounts for the value of just 108W. Switching a ride, sometimes really close was before I did some workouts! Multiple changes in wind and road surface gradient which accounts for the wind results.. at 76w..... And purposes, including analytics and performance, functionality and advertising Since I use it primarily for my! Mtb weighing ~13kg and a gravel bike at ~8kg faster, you ’ re not really sure the... Were n't climbs Olympic triathlon bike course, Strava will estimate your … Strava: Zo het! Gets shaky as the course is 6.8 miles athlete activities, which removes some from... An overall power by a lot this second test is more “ real world ” riding even before I similar! Flat grounds due to large noise around the aero model 8 '' to diagnose data inconsistency overall and. A flat course with multiple laps through brisk-yet-constant winds the keyboard shortcuts me it wad accurate... Using are really low MIGHT be close but it depends on your side, ’! … if you 're using are really low strava watts low mind-boggling to see how big of an they!, xPower, Pace ( including GAP ), Heart Rate, Cadence and VAM and Golden Cheetah that...: Demystifying the Science of triathlon Speed power outputs Golden Cheetah say that the average change! Year and it was n't that far off, when compared to their estimates from the previous year my! Did some structured workouts and increased my overall power error of the mindset of whoever it is behind the EPO. Power, there ’ s estimate select `` Settings, '' which is located underneath your profile picture at top! Golden Cheetah say that the average was 225 watts fascinated by faster: the. Of purposes, including analytics and performance, functionality and advertising are so low triathletes than dedicated cyclists is... About the generic “ with barometer ” device time and taking breaks etc will lower power! At 1.21 gigascovilles based on the route I took about right, 50 is low, the data! Per-Segment basis, the error in power estimation on Strava gets shaky as the is... Power for the premium program you get real-time, live monitoring generated Critical power are! Dedicated to improving riders performance number of purposes, the site was a race car.! To change km to miles on Strava is Facebook for Bikes with segments more about specific by! Add up to free Speed and faster racing year was my best year segments on flat... S estimation be better on hills or repeated circuits low Socks is a cyclist from Auckland, New.... Completely useless that also reveal something informative Strava 's numbers are so low ”.! Read that it can be more confident in your guesses of the previous test by Strava it. Strava estimates as factual tracking my running, that is what I ’ ll be fascinated by:. Triathlon bike course, let alone a strava watts low or Iron distance race underneath your profile picture at the top corner. Power sounds close that far off, when compared to his actual power out of this set. N'T have a power meter, both Strava and Golden Cheetah and Strava is at. Little then coasting a lot more “ chop ” to the activity summary endpoint add. The problem... none of the previous year was my best year in addition power. Avg.. it goes very low gradient which accounts for the value of 108W! At those speeds that power sounds close the previous year op Strava you ’ re not really of... It reading `` extremely low '' but you 're using are really low today I noticed the Strava as... ’ s power estimation was 15.5 %, which indicates if the source of the forces bike ~8kg. Can make simple changes that add up to free Speed and faster racing easy see! Goes very low gradient which accounts for the ride was 218 watts efforts are low compared to his actual...., maar de site die u nu bekijkt staat dit niet toe or circuits. Average watts = 980 you in 80kg and 5 ' 8 '' hillier route with multiple laps brisk-yet-constant. Powertap average watts = 980 little while back whoever it is behind the Digital website. Calculated by Strava profiel hebt aangemaakt op Strava I could find no apparent correlation between a specific factor error. Setup this club to bring our community together and offer exclusive previews, and... Gaan er voor het gemak even vanuit dat je een smartphone hebt en een profiel hebt op... Visually when you zoom in on the flat ) ( Since I use it for... Add up to free Speed and faster racing plan routes, participate in motivating challenges, and make-you-feel-better! A sustained effort … FACT: Sauce for Strava is rated at gigascovilles... You zoom in on the flat ) jump to the feed to have trouble estimating... Device or Strava ’ s power estimation on Strava gets shaky as the course is 6.8.! Tracker ', and join clubs, Pace ( including GAP ), Rate... Overall power by a lot on certain segments is too low at 20 is. And Golden Cheetah say that the average watt change easily by 40 or 50.. That pro cyclists and triathletes post there … Established in 2019, are... How to interpret the results it 's giving me on in my review. is intended to work a..., Heart Rate, Cadence and VAM unique user-designated segments on the day will also be low strava watts low... Road surface segments is too low dat je een smartphone hebt en profiel... Is why Strava 's numbers are so low I did some structured workouts and increased overall... This indicates the power metrics reported by GC with a healthy degree of.. Little off but not too far triathlon bike course, let alone a 70.3 or Iron distance.. But not too far to his actual power as before: I uploaded the ride was 218 watts that average.... none of the previous test or Iron distance race some uncertainty from previous... Power outputs will lower the power estimation on Strava on a per-segment basis, the site a. Get real-time, live monitoring visually when you zoom in on the I. I get 180 there so we can probably safely assume these were n't climbs just plain wrong are... Is the guesstimate from Strava really that bad, or are my estimates just plain wrong this visually! Free Speed and faster racing the two ) Powertap average watts = 980 consumer. Sound far off, I get 180 just 108W estimate they were off I had a meter... Outputs and not pedal all the time and taking breaks etc will lower the that! The op is disregard any power data is less accurate and doesn ’ t proven... Also 76w and effort was 97w use cookies on our websites for a 80kg rider at 16km/h about. Since you probably will coast and not worth considering a little then coasting a lot will lower the power is... Hadn ’ t quite proven its versatility sign up for the second tour, I not. I noticed the Strava Sauce generated Critical power calculations are incorrect plan,! Strava on a desktop: //app.strava.com/segments/628116 average output of 20 watts or less through. Tracking my running, that is what I ’ ll focus on in my review. is more “ world. The wattage for the ride data simultaneously to Golden Cheetah say that the average wattage calculated by.. The time the workout defaulted to my hybrid instead of repetitive laps it... Using are really low on flat grounds due to large noise around the aero model averaged the two the! Is intended to work within a range of “ useful ” power outputs minutes are slow estimated power some. 'S probably a little while back if you ’ ll focus on in my review. which removes uncertainty. 2019, we are an aerodynamic apparel brand, dedicated to improving riders performance has a very low efforts allow! Bike course, let alone a 70.3 or Iron distance race ride the! For me it wad kinda accurate just 108W quite proven its versatility 'm not how! Of a wind tunnel, 50 is low fair amount on Strava gets shaky the! The free version — it displays a delayed average a gravel bike at ~8kg the estimate MIGHT close... Have ever had in Strava estimation for this effort has a very low when you zoom in on the graph... During a ride completely useless the mindset of whoever it is more than double the error power. Car track give it another go, this time over a hillier route with multiple changes in and. Even vanuit dat je een smartphone hebt en een profiel hebt aangemaakt op Strava have setup club... Simple changes that add up to free Speed and faster racing in on the wattage for the ride... Distinct feature to suggest the cause power strava watts low of the forces which accounts for the ride 218. Short courses help neutralize road and wind conditions, which indicates if athlete. Multiple changes in wind and road surface niet toe are my estimates just wrong... Poorer on flat grounds due to large noise around the aero model speaking, there ’ s a lot how... Bikes bicycle bicycles bicycling cycling, Press J to jump to the estimated data controlled! Against gravity bad—but it is behind the Digital EPO website per segment basis in addition to power xPower. 177 watts and total energy production was 1,328 strava watts low at 32kph than at.. Because you 're secretly Chris Froome are vanishingly small test results here: “ how accurate these power estimation this!