El Oso Road is a 22.6 mile out and back trail located near Tortilla Flat, Arizona and is rated as difficult. The trail is primarily used for mountain biking and is accessible year-round. 22.6 miles Out & Back 3800 feet mountain biking Hide Map AllTrails Terrain Road Satellite Expand Map Sign up now to see this map! ReviewsPhotosTracksNo one has reviewed this trail yet. Be the first!