Cimarrona Trail (586)

A 3.8 mi hike from the Cimarrona trail head to the Arch (a trail bore through a pyroclastic flow) and then back. So ~ 7.6 mi round trip.

The first two miles of this trail are relatively easy, winding through the spruce fir forest on the edge of the Weminuche Wilderness. The trail enters the Wilderness area at 1.1 miles in. The trail then begins to climb steeply eventually passing a spot referred to as the Cimarrona Arch Window at the 3.8 mile mark.
Elevation gain to arch is ~ 1,900 ft.

The hike is generally rated "Strenuous" due to the elevation gain.

HOW TO GET THERE:
Drive North on Piedra Road (CR 600/FS 631) 22-miles to the intersection with the FS 640 (Williams Creek Road). Turn north and drive an additional 4.1-miles to the trailhead located on the north side of the road just beyond the entrance to the Cimarrona Campground.
There is a small turn in on the right that can accommodate 2-3 cars.
.5 mi beyond that is the capacious car park for the Williams Creek TR.