Anthracite Pass Trail is a 7.9 mile lightly trafficked loop trail located near Carbondale, Colorado that features beautiful wild flowers and is rated as moderate. The trail is primarily used for hiking, walking, nature trips, and birding and is accessible from June until September.
Directions from Carbondale: Travel south on Colorado Highway 133 for 25 miles past Carbondale. Turn left on to County Road 3 and continue 7 miles to the town of Marble. Turn right at the fire station and park at the old Marble Mill Historical Site. Cross the bridge and travel up the Marble quarry road 2 3/4 miles. The Yule Creek Trail #2083 trailhead is on your right, about 1/4 mile before the quarry. Shortly after beginning to hike up the Yule Creek Trail take a right turn onto the Anthracite Pass Trail.