Go to:
http://www.viewranger.com/en-usEnter Lone Pine, and click "Find a route near you". Use the map to find routes of interest. Most allow download of gpx for free (see "menu" button toward top right of page).
You will find one of mine from June, 2012, and the gpx is free. Many others as well.
You will probably need to "join", but it is free, as are the iPhone and Android apps. The only charges stem from buying maps, but there are several free maps (google street, satellite, open Street, Open Cycle), and they typically work fine.
These apps offer all functions you will need to follow a route, log a route, find a way point, etc...... Best gpx app that I am aware of. Apple featured them "on stage" with the announcement of the Apple watch 2.