You can upload .fit .tcx and.gpx files.
If you want to upload your training history and are a Strava user you can download all your data from Strava and upload it to PerfectPace.
PerfectPace is the fastest growing training platform for triathletes, endurance athletes and trainer. Analyze your data, compare your activities of different sport types and find out in which sport you train the most. Where are your strength and weaknesses that might need special attention. Train, race and recover at your PerfectPace