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Strava reliability

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  • March 30, 2013 at 3:02 pm #18364
    timb27

    Started using Strava and wondered if anyone knew if the stats it collects via my iPhone are reliable? Went out for a 60k ride up 7 East Devon Hills yesterday, and the app said 1200m and then corrected itself to 1015m of climbing. Then I saw a ride 2 mates did together this morning – 1 said 400m and the other said 650m!

    If the elevation is off, does that mean the top speeds are as well? I was quite proud of my 50mph segment from the top of Observatory Hill down to Sidbury!

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  • March 31, 2013 at 2:39 am #724749
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    Squiggle

    HappySnidge wrote:Check as

    HappySnidge wrote:
    Check as well that any cycle app is not publishing to the public where you live. Good speed usually means bike/enthusiast so don’t want bike theives targetting you by working out where your route started.

    I admit to searching on Strava while going through race start lists to check up on who’s been training, but can’t imagine anything duller than trawling through local rides trying to work out who’s fast enough to have a bike worth stealing.

    March 30, 2013 at 5:59 pm #724747
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    HappySnidge

    Check as well that any cycle
    Check as well that any cycle app is not publishing to the public where you live. Good speed usually means bike/enthusiast so don’t want bike theives targetting you by working out where your route started.

    March 30, 2013 at 4:30 pm #724745
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    the_mikey

    The quality of GPS data will
    The quality of GPS data will vary from one device to another, and data is also disturbed by tree cover, tall buildings, interference from other gadgets and it doesn’t work in tunnels. When it comes to hills and height data then there is even more room for error, not all devices have any means to correct or estimate height above sea level, and it’s also possible for the resolution of GPS data to be so poor that it fails to even provide data for that taxing hill climb and subsequent speed fest to the bottom again, for all it knows you may have travelled through a tunnel rather that over the hill.

    March 30, 2013 at 4:28 pm #724743
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    Markcw

    A mobile phone app will not
    A mobile phone app will not be as accurate as a purpose built unit such as a Garmin. There is a lot of information on line about the accuracy or inaccuracy of strava

    March 30, 2013 at 4:25 pm #724741
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    dave atkinson

    nothing’s up with strava, it
    nothing’s up with strava, it can only work with the data it’s given which can be pretty patchy. All GPS devices i’ve used tend to overestimate distance and altitude gain, sometimes by 10% or more

    i’d never trust a GPS for accurate speed measurement, not since i clocked myself at 96km/h going down a hill in Bath 😉

    March 30, 2013 at 3:20 pm #724739
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    Gkam84

    Mobile phone tracking with
    Mobile phone tracking with any app is never 100% reliable.

    I have found since getting my Garmin 500 though that Strava seem to adjust things. I put a ride into Garmin connect and also into Strava, both straight from the 500 without doing anything, both said different things.

    SO I am very wary of trusting Strava with anything now.

    I am also not the first to have this problem, I don’t know whats up with Strava, but it changes people’s data from various GPS units they use 😕

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