GPX is a platform-independent serialization schema that we use to simulate geolocation routes.
There are several ways you can generate GPX files. Here are three examples:

1. Record an actual route using the [*Endomondo* mobile app](http://endomondo.com). After you have
    recorded the route, log into the *Endomondo* site and download the route as a GPX file using the
    export feature in the RH navigation pane.
2. Create a route by requesting driving directions at http://yournavigation.org.  Select the `Export`
    feature and select GPX format
3. If you prefer Google maps, follow these instructions: http://www.elsewhere.org/journal/gmaptogpx/.