Open FIT File

A file with a FIT extension is listed as a GIS data file used by Garmin GPS navigation devices and Garmin software for sports purposes. Contains information about the coordinates and time recorded on the GPS device during a sporting activity involving a running, bicycle race, or other sporting event. FIT files can be worked on the web through the Garmin Connect service with which you can track progress, personal fitness and activity progress, thus generating a history over time. For example, users can upload data to Garmin Connect, using the FIT files, even in real time, and then review the routes traveled on a map and the total distance, duration and calories burned for each activity.

Garmin: Proper software to open FIT files is provided by Garmin, including Garmin Connect web services.