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Gunnison National Forest, Colorado
One of Colorado's best trails, 421 is located near Gunnison National Forest, CO. Trails' printable online topo maps offer shaded and un-shaded reliefs, and aerial photos too. Use topographic maps to find elevation, print high resolution maps, save a PNG, or just learn the topography around 421. You can also get free latitude and longitude coordinates from the topographical map and set your GPS. Premium members can download or print any topo and cover more terrain when you map your 421 route ahead of time.