I'm getting the "We don't support that file type."

Former Member, here's the issue - 1 timestamp out of chronological order.

This should work for you - ACAD2200-fixed.zip

Unzip the file then import into Garmin Connect using the import data page.

Repaired using Fit File Repair Tool. Unfortunately, this is is a Windows-only application, as it requires Microsoft Access

Forerunner models 25, 30, and 35, with their limited storage capacity, seem to be susceptible to these corrupt fit file issues.It's suggested to regularly clean out the \GARMIN\ACTIVITY folder on the device using these directions: Removing Recorded Activities to Free Up Space on a Garmin Fitness Device