Outage caused my data not to sync
Outage caused my data not to sync
Try syncing with Garmin Express on a computer. That fixes most sync issues. Also do a restart of the watch.
You can also follow the instruction in this thread to manually upload the activity: https://forums.garmin.com/apps-software/mobile-apps-web/f/garmin-connect-mobile-ios/370453/i-ran-during-the-outage-and-my-activity-won-t-sync