Convert user-saved tracks from GPS-Tracks for iPhone to KML files for Google Earth.
The GPS-Tracks iPhone application is available from the App Store or from http://www.gps-tracks.com . It can save recorded GPS tracks to the iPhone storage. This little Java applet provides the functionality to convert these saved tracks to KML files, for use with Google earth.
Under Windows, it uses the synced files from the iTunes phone files backup, and extracts the tracks from there. Under Linux...