The distance calculated by my watch was totally wrong. I ran 7.5 km and it calculated 12 km. It also said I ran 1km in 33 seconds. My battery was low and it was on energy save mode.

I went for a run with my instinct 2 on trail run mode. It was a 7,5km run. My watch said that the run was around 12km, and it also calculated the km milestones wrong. For example, it said that i run a km in 30 seconds. The battery of my watch was low, and i had it on battery save mode on.