In order to use a GPX file you will need:
- A smartphone with GPS
- A GPX Wiewer application
Download the file of the path you are interested in and open it with the application you installed.
Your mobile phone will tell you where you are in relation to the route, without the need of the internet.
If you do have internet connection, there’s the option of having the map beyond the route.
Don’t forget to charge your mobile phone!
Good luck !!!