GPS Tuner 6.0
the author of this app says:
Attention all climbers, skiers, anglers, hikers, quadders, rafters, mountain bikers, and everyone else who loves to get away from city life with GPS Tuner 6! Make the most of your precious time outdoors with GPS Tuner 6, the compelling new version of the tried and trusted off-road navigation software for nature lovers everywhere.
Registration required to download trial version from developers web page. Windows Mobile 5 or higher w/300MHz processor.