Mosca Pass Trail

Dogs on a leash all year

Forest trail in the Preserve. Dogs can also go on the dunes in the main use area, but the sand gets very hot in summer.

Source: National Park Service, Great Sand Dunes National Park and Preserve: Pets. Checked October 28, 2026.

Route shown on the map: about 5.9 km of trail as mapped in OpenStreetMap. Trails can include side paths, so check the park map for the walk you plan.

Follow the signs at the trailhead: parks can close areas to dogs for wildlife.

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Great Sand Dunes National Park and Preserve: the rule in full

Leashed pets are allowed in the Preserve (including Mosca Pass Trail) and the main use areas of the park (including Piñon Flats Campground, Dunes Overlook Trail and Medano Pass Primitive Road). Not in the dunefield beyond the first high ridge, most grasslands, or the Sand Ramp Trail. Sand gets very hot in summer.