Would be decently accurate, though their approximations would lead to a misrepresentation of gain/loss. However, their daily limits would really inhibit use of

Would be decently accurate, though their approximations would lead to a misrepresentation of gain/loss. However, their daily limits would really inhibit use of this service for said purpose, since my Garmin bike computer records easily 2000 points in a 30 mile ride, even on smart recording (every few seconds)