This is an extended version of the standard Browntown Loop, crossing back over the Blue Ridge further north at Lands Run Gap, rather than Jenkins Gap. The route picks up the end of Dickey Ridge Trail and then proceeds south on the Appalachan Trail over Compton Peak to Jenkins Gap.
From the trailhead, take the Jordan River Trail 1.25 miles to Thoroughfare Gap. Take a right onto yellow-blazed Mount Marshall Trail and after 0.4 miles, take a sharp left onto the yellow-blazed Bluff Trail. In 2.3 miles, take the blue-blazed Big Devils Stairs Trail for a short out-and-back to a view of the Big Devils Stairs gorge. Return to the Bluff Trail to continue the climb, topping out on Skyline Drive at Gravel Springs (mile 7.0).
Cross the drive and the Appalachian Trail and continue straight down an old roadbed into Browntown. You will exit the woods at a farm with a beautiful stone wall, where you take a left onto the gravel road. After 0.25 miles, make a right onto Gooney Manor Loop (State Route 631). Stay on Gooney Manor Loop for 1.25 miles to the country store in Browntown (mile 11.5).
From the store, backtrack on Gooney Manor Loop a short distance before taking a left onto Smith Run Road (State Route 634). 1.1 miles after the store, take a left onto Lands Run Road (State Route 622), ascending into the park and crossing Skyline Drive at Lands Run Gap. Cross the drive and pick up the Dickey Ridge Trail and ascending to the Appalachian Trail (AT). Take a right (southbound) on the white-blazed AT, crossing Skyline Drive at Compton Gap, and ascending Compton Peak and a nice view on a side trail to the right. Continue on the AT down to Jenkins Gap.
At Jenkins Gap cross Skyline Drive and follow it uphill for 0.2 miles to the Mount Marshall trailhead. Turn left down the yellow-blazed Mount Marshall Trail as it winds around the mountain, crossing Waterfall Branch and Sprucepine Branch, before arriving at the intersection of the Bluff Trail in 3.5 miles. Continue straight on the Mount Marshall Trail for another 0.4 miles to Thoroughfare Gap and intersection with the Jordan River Trail. Take a left on the Jordan River Trail for 1.25 miles back to your car.