Garmin nRoute is the popular piece of software that allows for auto-routing on a laptop computer with a Garmin GPS unit.
nRoute is a powerful and feature-rich tool that supports waypoints, tracks, points of interest, addresses and more, but is primarily for navigating and tracking in real time.
nRoute is also compatible with most Garmin units.
Garmin nRoute - the well-known and powerful auto-routing software application from Garmin.
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