You have the possibility on Trail Connect to import a GPX files on the app. This functionality has to been used when you already have a GPX files (from a competition website, send by someone etc). 

How does it work ?

1. On home screen, click on gpx files. 
2. Click then on the button on the top right which will open your GPX files present on your mobile phone. 
3. Click on the GPX which will be appeared in the previous window 
4. You can locate you on the route. If you want use track alarm, live tracking, register the route before.