Importing .tpo files

I'm planning a 25+ mile trip and would like to import the .tpo file located at:

http://mountainbikebill.com/images/Trails/PalmCanyon/PalmCanyonVer2.tpo

Does this need to be converted to a .gpx file first? If so, can you point me in the direction of an app that will do it? I tried GPSBabel, but couldn't make it work since it is more of a device-to-device converter.

Thanks for any hand-holding you're able to provide.