I’m hoping there’s a setting somewhere that prevents Strava from including walking into the total distance covered. If you run a rep and pause the Garmin and then stay motionless for the interval there’s no problem. However if you walk or jog recovery then Garmin seems to add this to the total distance when uploading to Strava, which then calculates that you’ve run much faster than you really have. Strangely, the Garmin app calculates it correctly and ignores any distance covered during recovery. What gives, as the Americans say?