GPS File Depot has installation instructions for PCs and Macs. If you have MapSource, many will self-register. There are a couple of easy ways to install these maps. You can also experiment with adding terms such as map, topo or contour to your search. It’s always worth searching for the name of the area you are looking for + Garmin + img (the file extension used by these maps). Sometimes a map creator posts a map to his own website, and you won’t find it in one of the above repositories. I’m hoping this trend expands to the entire US, especially since Garmin seems to put a low priority on trail data. Southwest trails – covers Arizona and New Mexico, with plans to expand to Utah and Nevada.Northwest trails – covers Washington, Idaho, Oregon, Montana, Wyoming, British Columbia and Alaska.UPDATE: This site is no longer available.Ī new trend has community mappers creating transparent trail maps that layer on top of topos. Mapcenter – The best repository of international maps, although you’ll see more highway maps than topo maps.If your state isn’t listed, be sure to check out the regional maps before giving up. GPS File Depot – The best source for US topo maps, this site also includes a limited selection of international maps, forums, and tutorials.We’re also beginning to see transparent trail maps that can layer on top of topos. Detailed 1:24,000 scale topo maps are available for most states in the US, as well as for some foreign countries. 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.

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