I wanted to ask this for a while. Hope it hasn't been talked before. If yes, please be kind and point out the related thread...
I would like to know what can be the cause of the difference -in distance- between GH625 and the distance shpwed in sports track. Ex, on a 21.1km there is a différence of about 100m.
Slope, viaduc (lost of signal), any idea?
What is the real distance???