Ride route recorded correctly but distance wrong

[gloucsgeorge]

I did a bike ride this morning, the route is shown correctly on the map, but the distance is way out. The ride was actually about 34 miles, but is shown as just 20.99 miles, meaning the aver

[Heybales]

Wow.

While there easily can be a difference between GPS points good enough to put the route on road on a map, and the actual distance on that road - that is way off.

Ever used one of those mapping programs where you pick points along a road and the site lays the route down across the road from point to point - sounds like you may have had enough data points for the route to be right, but the distance is calculated from the actual data points, as the crow flies.

You probably lost signal for a chunk of time.

Between any tall buildings or out in woods?

Did you enable the GPS and immediately start riding?

Both are problems - the latter can keep GPS accuracy pretty awful for a long time as it's harder to hone in while moving.

[gloucsgeorge]

Heybales, thanks for your answer, I am still not sure what happened.

Today I did another ride and everything worked perfectly. I recorded the ride on Strava and Fitbit, both register an average speed of about 19.5 mph ( there was a small difference, but nothing significant ).

I think today I started the Fitbit application on my phone before starting the ride, possibly that helped.

I am new to Fitbit, have only had it since June 5, but have used Strava for a long time. I also just linked my Strava and Fitbit accounts ( but that was after today's ride, so couldn't have had any effect ).

[emili]

@gloucsgeorge well that is a pretty impressive ride. I think it was probably a GPS connection that went wonky on the first ride. Fingers crossed you get good data from now on