Silly STRAVA Racing
- Thread starter fossyant
- Start date
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SoloCyclist
Guest
GPS varies depending on the sample rate the app uses and the way it interprets data and depending on your ride too.
If you ride in a dead straight line for 100 miles, you only really need the start and end point, any points on the way that arent absolutely precise are adding small amounts of error data, which even at 1 or 2% can add up to a few miles on a 100 mile ride. On the other hand if youre doing a downhill slalom type ride the gps probably wont sample often enough to follow your route exactly and will essentially cut corners reducing your overall distance. For the guys writing the gps apps its a fine balance between oversampling adding in extra distance from cumulative tiny errors and under sampling cutting corners. On these apps the sample rate on cycling tends to be considerably higher than running which in turn will be higher than walking, as in to not add too much extra distance to each, but its far from perfect without using a bike wheel measurey thing.
I like your thinking. What I was thinking was that if an organised event planned a 100 mile coarse then that would be based on mapping usually. 600 people enter and 600 people use GPS. 600 people would get slightly different distances on their devices but all would get an official time for the 100 mile. mine was 4:58:14. Right?
jefmcg
Guru
Any other women in this thread? It seems that strava is not appealing to women, I've only got a few QOM and one is at 8.7km and another I'm 10/10, but as the only woman, QOM!
willhub
Guru
I'm pissed off, I ridden 73 miles back to Selby today, headwind almost all the way, then I want to see how quick I don't it, start to save the ride, uploading, then it disappears
!?!?! Is there anyway to get it to find the ride and upload it?
!?!?! Is there anyway to get it to find the ride and upload it?
willhub
Guru
HTC OneX and Strava app.
I use a Garmin 500, so not sure to be honest. I've used the iPhone app but it can be a bit temperamental.
I assume when you open the app now there's no mention of the ride? How about on the strava website?
doctornige
Well-Known Member
Can you email the GPX file to yourself and hen manually upload on the PC (or Mac)? Cyclemeter for iPhone lets you do that.
HLaB
Marie Attoinette Fan
Yip, all my older rides were gpx files on my hard drive, uploaded to Strava and you can download via the 'Actions' button on a ride in Strava.
doctornige
Well-Known Member
Yus, but Will is trying to rescue data that's on his HTC phone.
willhub
Guru
Sucks, I just want my beloved Garmin back, spending money on a new screen is a bit risky as it's possible it might not be the screen and could be something on the board or something. I was hoping I've managed 17-18mph average home today, as it was a headwind, and last year I managed 18.2 with a tailwind.
MrJamie
Oaf on a Bike
Honestly, I dont know much about how cycle races are done, I think often someone draws event courses on a website, IIRC certified events like marathons are measured by a guy with a wheel on a stick (or a modern equivilent) and take the shortest route around the course. Often at the end of a running race many competitors post online that the course was +/- upto 5% of what it was meant to be because their GPS tracking was out often contrary to eachother, even just 1% out is about 500m different on a marathon. Even the same phone running two GPS apps at the same time will often show quite different results, Ive even missed a KOM on Strava by 1 second and uploaded my GPX of the same ride from another app and got it because the gps error was in my favour (and subsequently deleted it). If I were you Id just be happy enough to get a sub 5hr on a 100 mile event whatever the gps tracking said, unless there was an overwhelming consensus from other riders that the race was short.
DRHysted
Guru
- Location
- New Forest
Not happy, busted a gut on the final climb this morning (young wipper snapper at work has levelled my time), and it's not showing on Strava!!!
jefmcg
Guru
Too late for this run, but I've discovered the value of using more than one GPS tracking app. Then if one fails, you can get the gpx from another and upload it.
I'd recommend Endomondo, as it constantly uploads to endomondo.com, so even if you have some sort of catastrophic failure, the track will be available on the site. It does use more battery power than strava, it seems. Oh, and the live tracking feature might be useful if someone at home is wondering where you are or when you'll be back.
(my phone has developed the charming trick of rebooting mid ride, which I'll have to investigate)
