Strava

And there's no way of forcing it, right?

I do love Strava but sometimes it's a bit hit-and-miss. Clocked me at 83km/h (50-odd mph) on an (admittedly very steep, long) downhill the other day, fixed on 46:18. I'm assuming it's wrong there, but I'm still bragging! :P

Strava only displays your gps data, most likely this is what is wrong not strava. iphone or garmin?