did this last year , basically went work which is 7 miles and watch is tracking about 4 miles
i know its wrong as i cruise at about 14mph and watch is showing 8mph
waited for gps
reset watch
and deleted remote sw folder
last time it fixed itself with a update currently running 18.54
garmin 3.81 miles
https://connect.garmin.com/modern/activity/10452829349
same strava corrected distance 7.07 miles