Lake Mary Loop is a short, easy 0. 97-mile trail at Rocky Mountain Arsenal National Wildlife Refuge offering lakeside boardwalk access through an urban wildlife refuge where bison and prairie dogs roam.

The trailhead provides parking and access to catch-and-release fishing at Lake Mary (valid Colorado fishing license and $3 daily fee required), with the refuge open daily sunrise to sunset.

The trail is hiking-only, well-maintained, and suitable for all fitness levels with minimal elevation gain.