GPS App accuracy. Garmin vs Strava vs RidewithGPS
I'm trying to figure out how far I actually ride.
On a long ride today, I used a RidewithGPS route of 103.0 miles. My Garmin had me at 104.1, Strava at 102.9.
My Garmin 820 is set to get a reading every second, and I did a measured roll-out for the tire circumference.
Which is the most...