Why is lap pace alert on my watch different from what is recorded on Garmin connect? I have Garmin forerunner 255s with software version bundle 21.20.This has only started to happen recently.
For example in today's run the watch showed lap pace alert at 4:14 min/km for the 6th km but when I checked the Garmin connect app data later on the same 6th km lap Pace was shown as 4:16 min/km.
So during the run I thought my lap pace was 4:14 min/km for that lap but then Garmin connect showed a 2 second slower pace for that km.
This can put me off target by 42-43 seconds in a Half Marathon race. Not fine at all.
Auto lap distance is set to 1km auto lap.