Border Line Trail

The Border Line Trail is the hardest climb in the park. It starts at the 4-way intersection of Staunton Ranch Trail, Marmot Passage Trail, and Bugling Elk Trail. After a quick up and down along the side of the mountain, the trail switchbacks and the real climbing begins.

The trail peaks at about 1.2 miles, and right when the descent starts, there is an opportunity for an overlook at a point call "Staunton Rocks." This provides a great resting point to take in the view before the final descent of the full clockwise circuit down Mason Creek Trail. The descent continues and ends at the Old Mill site, a turn-of-the-20th century saw mill that has some cool abandoned buildings and equipment. This is a 3-way intersection of Mason Creek Trail and Old Mill Trail, which is a hikers only trail.