Yesterday GPS went crazy for the first 3 km (the lock was OK, as it plotted the run ok for the first 400m) it should have been on the line that is plotted on the way back. As I had intervals from TP on the menu it was pretty hard to do them.
I broke various PB in Strava , and even when I corrected the distance in Strava the distance and the time was off and still had a mile PB.
I assume there is no way to correct it and why did it happen? I would not want anything like that to happen when I try to brake the 2h marathon barrier .
@Ketoohs This can happen with any GPS device and fortunately does not happen often. I once had the GPS track take me from Colorado to Spain:)