The purpose of this post is to explain some ways to register the GPS coordinates while doing a route
GPX Viewer Pro y is the premium version of free app GPX Viewer.
GPX Viewer Pro allows to record a route you are performing that can be later be exported.
Full instructions can be found here.
Polar is a popular brand of sport training devices.
You can register the route by using a Polar device with GPS functionality integrated with Polar Flow portal.
Once you sync your Polar device with Polar Flow, you can download the GPS coordinates from the route on GPX, TCX or CSV file formats.
See complete instructions here.