Result differences between Garmin and Strava

When Strava syncs with my Garmin app after an activity, the ave and maximum results achieved are significantly different. For my latest ride, the max speed diff between the two are 2.8km/h (Strava is always lower), and the cadence differs by 3rpm!

Why is there a difference if Strava receives the information from Garmin? Why is the Strava results always lower?

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Комментариев: 24
  • Totally agree with this. I also do not know why Strava should changer the times that the device that has recorded the segment submits?? I understand auto pause can effect a time etc but on a flat or downhill effort there is no reason there should be a difference. A few times lately Ive been going out to improve on past efforts and found myself chewing the stem trying to smash a record and then enjoying the rest of my ride thinking I have shaved 2-3 seconds of my PB only to get home and see on upload I was a second behind and the PB not beaten? I also missed out on two KOMs recently after giving huge efforts to take them. Seriously wondering why I pay for premium?

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  • As far as i've read. Strava doesn't use the speed or the power information from the sensors.. it calculates the speed and power from GPS data (distance, elevation), so even if you have a power meter.. the strava info is going to be different from whatever the sensors are logging into your device.

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  • My response from Strava. Which took weeks for a response I might add. “Garmin devices use a different algorithm for determining when a user starts and finishes a segment than Strava uses, which can affect the elapsed time reported for the segment. To ensure consistency between users, the times shown on the Garmin during an activity are preliminary, and the times shown on Strava after uploading are final.”

    I still don’t understand why there should be a difference! Strava should honour the information Garmin provide and Garmin should use the same algorithm. Bottom line we should be able to trust the information these devices and services we pay for are accurate.

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  • Have a huge difference in elevation data on todays ride. Garmin , which I use to track ride, gives elevation of 947m, and Strava after sync stated elevation of 692m. 

     

    Is this a settings problem because does not make sense to me. Garmin provides the data but Strava does it own thing?

     

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  • Strava is becoming useless. I just beat my 10k record by 2 minutes.... only it never happened. Strava simply modified Garmin results adding some extra distance to my run. Strava displays my route with some obvious errors so it means it modified correct Garmin record using some poor algorithm. 

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  • Similar issue here. Worked out a time trial cycle route with the aim of beating the hour. Garmin gives my average speed at 19.2, Strava at 18.9.

    Looking at the data it MUST come down to the autopause. The distances are almost identical (18.83 miles vs 18.82) so it really has to be the autopause at traffic lights and roundabouts.

    Effort recorded on a Garmin 520 and synced to strava, so what is strava doing to the data it gets to decide I've actually been stopped for less time than Garmin says? (41 seconds difference.)

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  • same issues - however there is an added dimension.

    I accidentally sync'd my Garmin with someone else's strava and it uploaded and showed exactly what Garmin showed.  I exported the activity and tried uploading into my strata and it added 0.8km and 7min.

    I have raised with Strava support.

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  • Twice this week I set PRs in the same location with Strava adding 3 seconds to it. I have had rides where I was side by side with my buddy who used an iPhone and an app to log rides on Strava and didn't use his cycing computer . He was always faster, rode longer, and higher despite riding side by side. I tried using both my watch and my 1030...both uploaded to Strava...my watch data gave me a KOM...my 1030 was a couple of seconds slower and what was weird was for this segment I had 3 sets of data...one that was 20 seconds more (glitch). I got the KOM but a few months later...Strava changed it to the time caused by the glitch...I can accept the fact I may not have actually gotten the KOM...but from 1st to 121st or whatever Strava decided sucked.

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  • I have the same problem with data coming from my Wahoo. Distance is usually pretty close, within 0.1 mile, but average speed is generally 0.1 MPH slower. Even though I don't like it, I can understand that there may be a small difference caused by rounding in algorithms even though the data is the same. What I do not understand is on my last ride the peak power reported by Strava is 26W lower than shown on my device,  in Wahoo's app, and also in Training Peaks. This was using a power meter so is Strava just ignoring some of the data?

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  • The same thing happening to me all the time; my today's bike ride shows an average speed on Strava lower by 0,5kph compared to Garmin and the elevation gain less than 50% (with the very same route measured by Strava directly showing the real elevation gain...).

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  • Garmin uses the just the Time including stops to calculate speed etc. Strava uses the moving time it gets from Garmin that is why you have the differences. If you try to stop and start the garmin manually every time you stop start there is going to be no significant difference in the values. I have not tried it with the auto stop and I do not know if this works correctly.

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  • Today I rode just over 20 miles at an average speed of 20.5 mph on my Garmin. I manually stopped at bridge crossing (had to walk) and red lights. When my ride was uploaded, Strava had my average speed at 19.5 mph. Essentially wiping out over an estimated 20-25 watts average over an hour. That is not okay. My subscription ends and this isn't fixed, I'm done. 

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  • I’m having the same issues. My Garmin avg speed is always higher than what is posted on Strava. This is very frustrating especially after all the recent changes at Strava. Like many I doubt I continue to pay for Strava premium.

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  • My Garmin showed me 47 secobds and a little crown to indicate I had a KOM. When I get home it turns out Strava added 3 seconds which puts me in 2nd. So I would have to go back again instead of just getting correct on spot info and make a new try. I am not paying for Strava if this persists.

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  • Same here - Strava always shaves about 0.5 km/h from my average speed. To be honest I only use the Strava app because my club uses it, otherwise Garmin Connect gives me more features (especially now) for free, other than Segments. I ignore the data I see on Strava and accept the Garmin as gospel.

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  • Same issue here, garmin 830 indicate i had a KOM at 1min02 seconds, uploading to strava 1min8 seconds. Second place, even on the segment analyse i'm faster than the first KOM with 6 seconds, but strava reports 6 seconds slower...

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  • I too get totally different distance , elevation and pace on garmin watch vs strava iphone app, with both results on Strava. Eg. 4.73 miles vs 5.03 miles.

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  • Same problem here. Overall average is equal (because apparently it's just distance divided by time) but my 5K laptimes are off. 

    I use a 5K laptime to quickly see if I'm averaging 30kph for that 5K (10 minutes). Strava doesn't handle stops correctly. It should just take what Garmin gives it. 

    Example from the last ride (50,5km):

    Lap 1 - 5 are correct

    Lap 6: Garmin 9:22 / Strava 10:33 (auto stop on Garmin) 

    Lap 7: Garmin 9:31 / Strava 9:49 (auto stop on Garmin)

    Lap 8 - 9 are correct

    Lap 10: Garmin 9:46 / Strava 10:11 (auto stop on Garmin)

    Lap 11: correct again

     

    Overall:

    Garmin 50,53 / 1h36:59 / 31.3 avg

    Strava 50,52 / 1h36:55 / 31.3 avg (eh??)

     

    Device: Garmin Edge 530

    Also: top speed from the Garmin: 41.3, top speed on Strava: 44.6 (how? The source GPS comes from the Garmin device, my Polar Vantage M recording top speed at 42.3, it was definitely not 44.6kph)

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  • Same issue with my Garmin 520 - Strava always seems to have a slower speed by about 0.5 km/h or so. Strava, what is going on??

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  • Just did a ride and I lost 0.9 mph average compared to garmin. I did stop and start at traffic lights. Very annoying result. I wonder if there would have been a different if I didn’t stop and start or I used strava app?

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  • Where the f is Strava's response to this??

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  • I'm guessing a phone would not be as access a dedicated cycle computer or running watch. So for everyone comparing data from those sources that may be the explanation.

    Where data is uploaded from Garmin and Strava comes up with a lower average speed my guess now is that autostop on Garmin kicks in when you are actually still moving - so Garmin has you teleporting a few metres while Strava could be recording brief periods of very slow movement..

    I only noticed this problem today on a ride with a few traffic lights - most of my rides are unimpeded and so elapsed time and moving time are the same. On today's ride Garmin Connect has me at 21mph and Strava shows 20.9 with an extra 20seconds added to my time..

    Still, I would like some definitive answers from Strava.

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  • Had issues with speed and timings for segments, my garmin tells me I have a new top speed and new segment time of 59, but then on strava it’s saying 1:00, which is 1 second off the KOM. Shame really Strava can’t trust Garmin as we pay lots of money for all these devices and apps. Hopefully they can sort something out!

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  • Starting and stopping your Garmin device does not help.  I rode at 19.4 today on my Garmin and Strava had 19.   I had 2 light stops and they took a while.   The manual start stop and/or the auto pause does not work.  Starva just does time you start till stop regardless of pauses.  This is so frustrating.  I am basically not going to use this app because it ruins a good ride.  

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