If you’re a Garmin owner and aren’t aware of all the free maps available for your unit, you’re in for a treat. Detailed 1:24,000 scale topo maps are available for most states in the US, as well as for some foreign countries. We’re also beginning to see transparent trail maps that can layer on top of topos.
Sources for free Garmin GPS topo maps
- GPS File Depot – The best source for US topo maps, this site also includes a limited selection of international maps, forums, and tutorials. If your state isn’t listed, be sure to check out the regional maps before giving up.
Mapcenter – The best repository of international maps, although you’ll see more highway maps than topo maps.UPDATE: This site is no longer available.
Trail maps too
A new trend has community mappers creating transparent trail maps that layer on top of topos. Here are a couple of notable ones:
- Northwest trails – covers Washington, Idaho, Oregon, Montana, Wyoming, British Columbia and Alaska
- Southwest trails – covers Arizona and New Mexico, with plans to expand to Utah and Nevada
One of the nice things about Garmin units is the bevy of 



