So after running a course I made today, I found that there was quite some questionable data.
The original course was 7.91km but it ended up being 9.47km although I made a small detour and skipped a part which should more or less cancel out.
Most data is more or less correct, but there is something going on with the pace, elevation, power and temperature metrics. Not sure what went wrong here.
https://connect.garmin.com/modern/activity/14111254716
The course is more or less flat with barely any elevation, and the real pace should be around 6:00/km
