Mill Castle

Managing agency

Routt NF — Hahns Peak/Bears Ears RD

Mill Castle is a 13.5-mile loop trail located in Colorado near the Routt National Forest, specifically within the Hahns Peak/Bears Ears Ranger District. This moderate to challenging route offers a full-day hiking experience for those seeking an immersive wilderness adventure. The loop configuration allows hikers to experience varied terrain and scenery without retracing their steps. The trail is managed by the US Forest Service through the Routt National Forest, ensuring maintained pathways and established routes through the district. The Hahns Peak/Bears Ears area is known for its mountain landscapes and forest environments. Hikers should prepare for a full day on the trail given the 13.5-mile distance and plan accordingly with adequate water, snacks, and sun protection. Weather conditions can vary significantly in Colorado's mountain terrain, so checking current conditions before heading out is recommended. The trail is suitable for hikers with solid endurance and backcountry experience. Visit the Routt National Forest website or contact the Hahns Peak/Bears Ears Ranger District for current trail conditions and any seasonal closures.