GlueTrail

Glue Trail is a GPS-enabled system for navigating outdoor trails where network-based maps are non-existent or details are too sparse to be useful; it lets you navigate any image source on your handset by gluing it onto a specific geographical location, turning that image into a trail map that will scroll relative to your current location. You can even record a track in real time, as you explore the trail, and later export that track as a kml file for external viewing.

Navigate your favorite trail maps right from your handset using Glue Trail, even without a network connection, in any location where you can obtain a GPS signal; all that's required is to get the trail map onto your handset as a photographic image and 'Glue it'!