The HST crosses a portion of SGL No. 145 on General Biddle Road.
You may start at the parking areas on either end: Pinch Road or
Colebrook Road (also known as Manheim Road depending on the map
you're using). The Horseshoe Trail does NOT head south to the
Turnpike, but you must. You'll be turning at a large clear cut area
and then following the trail to the left.
Good Luck