My FIT file is corrupt

This will work for you B3V83222-fixed.fit

Repaired using Fit File Repair Tool.¹

Import into Garmin Connect using the import data page

Some tips to help minimize the occurrence of corrupt fit files:

• Keep the number of files in the \GARMIN\ACTIVITY folder on the device’s file system to a minimum using these directions: Removing Recorded Activities on a Garmin Fitness Device If you delete the files in your activity folder with a Mac computer, then empty the trash folder before you unplug your device from the computer.
• Try to avoid excessive button presses during your activity.
• Regularly check for firmware updates using Garmin Express
• If issues with corrupt files persist, contact Garmin Support.

¹ Fit File Repair Tool requires a Windows PC with Microsoft Access (full version or the free runtime version).. As well, you might encounter issues with downloading and running the software, mostly related to configuring security settings. In MS Access, Options > Trust Center Settings > Trusted locations. See thread and answer - Upload status: The file could not be uploaded

This will work - B7TB0131-fixed.fit

The usual recommendations (slightly modified from 4 months ago)

• Keep the number of files in the \GARMIN\ACTIVITY folder on the device’s file system to a minimum using these directions: Removing Recorded Activities on a Garmin Fitness Device If you delete the files in your activity folder with a Mac computer, then empty the trash folder before you unplug your device from the computer.
• Try to avoid excessive button presses during your activity. Use auto-pause if you have a lot of stopping/starting
• Regularly check for firmware updates using Garmin Express
• If issues with corrupt files persist, contact Garmin Support.