[1stthings1st]

Hello,
I have been trying to measure my annual mileage, both indoor and outdoor rides.
I use my bike in a trainer quite a bit. So it seems I am not getting in the milage for these rides. I also use a gps to record distance.
Anyone have this problem? How do you guess mileage?

 

[Industry_Hack]

Set up a wireless computer to your rear wheel for the winter.