This long and challenging loop begins on the Paine Run Trail which descends into the valley from the Blue Ridge Parkway. After many switchbacks, the trail runs along the river that pours forth from Blackrock Springs and into Lefthand Hollow. When the trail intersects with the Trayfoot Mountain Trail, take a right and begin climbing up the spine of Trayfoot. The path up the ridge offers views of Calvary Rocks and Horsehead Mountain to the south, and the splendid view from the Trayfoot Mountain summit is worth the strenuous climb. After descending from the summit, veer right on the Furnace Mountain Trail, which will eventually intersect with the Appalachian Trail. Here, make another right. Take the AT along a parallel course with the Blue Ridge Parkway, which will eventually lead back to the Paige Run parking area.