GrantR-PTA Posted February 17, 2015 Share Hi, My Samsung S5 Strava app recorded a ride as 38 km at an average speed of 24.1 km/h and my Polar S625X recorded the distance as 39.1 km and an average speed of 24.9 km/h. I have my wheel diameter set a 2290 (29x2.0 MTB tyre) on the Polar. Any ideas as to why the difference, which would be more accurate? Regards Link to comment Share on other sites More sharing options...
Long Wheel Base Posted February 17, 2015 Share https://community.bikehub.co.za/topic/137271-inaccurate-strava-elevation/?hl=+strava This might give you some insight. Link to comment Share on other sites More sharing options...
GrantR-PTA Posted February 18, 2015 Share Thanks. Rode again today. Polar measurements: 27.2km @ 25.7km/h. S5 and Strava 26.6km @ 24.9km/h. The difference today was a different route (except for first 10km) and the sun was out. On the previous ride it was overcast.... Link to comment Share on other sites More sharing options...
TheJ Posted February 18, 2015 Share Not unheard of. My Samsung S4 GPS and a friend's Garmin GPS would also report slightly different distances. Link to comment Share on other sites More sharing options...
GrantR-PTA Posted February 18, 2015 Share Not unheard of. My Samsung S4 GPS and a friend's Garmin GPS would also report slightly different distances.It is irritating! You say "slightly different". A 1.1 km difference over 38km sounds like a lot to me. At my level of fitness every KM counts . But maybe in the bigger scheme of things it doesn't really matter. Link to comment Share on other sites More sharing options...
jimmycool Posted February 18, 2015 Share My S4 and el cheapo Ryder computer hardly ever differ by more than 100m over a 50k ride. But then I record with with endomondo and upload to strava afterwards. I tend to find that endomondo records more accurately and is easier on the battery. Link to comment Share on other sites More sharing options...
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