Birch Run shelter is located 1.4 miles south of Shippensburg Road, just after crossing a footbridge over Birch Run and just a few feet off the trail. We pass this shelter during the PA AT #3 hike and take a short break here before continuing to the Milesburn Cabin for lunch. There is one shelter lean-to, with a picnic table on the covered front porch. The privy is behind and slightly uphill of the shelter. Across the AT, there is a short trail to Birch Run, which serves as the water source here.

Built 2003 (replaced a pair of smaller shelters built in 1934 by the CCC)
Next shelter NB: Toms Run shelter, 6.3 miles
Next shelter SB: Quarry Gap shelter, 7.3 miles

Distance - 2.8 mi
Time - 1:06
Total Ascent - 308 ft
Total Descent - 283 ft
Max Elevation - 1590 ft
Min Elevation - 1330 ft

I parked on Shippensburg Road, our normal starting point for the PA AT #3 hike, and walked south along the AT to the shelter.