route must be gpx or kml format, try convert with gpsbabel
the route must be in format "gpx" or "kml" so you must convert your GTM in one of those formats. (you should try with "gpsbabel" it's a well known tool which does all kind of conversions )
then you need to put the file under the "route" subdirectory of your run.gps installation on your phone (but this is well explained in the manual).