Benchmark run data

Hi there,

I just bought my fenix 6 pro and just went for a benchmark run suggested by Garmin Coach. At the end of the run I thought the activity was going stop automatically but then realised that it kept on going after walking for an extra 20mins. At which point I clicked the button top right to stop the activity. My benchmark pace should have been in the region of 5:30/km but instead it now says it's 8.30/km.

Should I reschedule the banchmark run for another day in order to get better data or will my Garmin watch 'know' that the activity stopped when I stopped running? Therefore not taking in consideration the walk afterward.

Thank you for you help.