<P> Pennsylvania has 229.6 miles ( 369.5 km ) of the trail . The trail extends from the Pennsylvania -- Maryland line at Pen Mar , a tiny town straddling the state line , to the Delaware Water Gap , at the Pennsylvania -- New Jersey border . The Susquehanna River is generally considered the dividing line between the northern and southern sections of the Pennsylvania AT . South of the Susquehanna , the trail passes through Pine Grove Furnace State Park . The Pennsylvania section of the trail north of the Susquehanna , from Duncannon until the Delaware Water Gap , is noted for its eroded and rocky terrain which can slow hiking . </P>
<P> Pennsylvania has 229.6 miles ( 369.5 km ) of the trail . The trail extends from the Pennsylvania -- Maryland line at Pen Mar , a tiny town straddling the state line , to the Delaware Water Gap , at the Pennsylvania -- New Jersey border . The Susquehanna River is generally considered the dividing line between the northern and southern sections of the Pennsylvania AT . South of the Susquehanna , the trail passes through Pine Grove Furnace State Park . The Pennsylvania section of the trail north of the Susquehanna , from Duncannon until the Delaware Water Gap , is noted for its eroded and rocky terrain which can slow hiking . </P>
where does the appalachian trail start in pa
where does the appalachian trail start in pa
Pen Mar , a tiny town straddling the state line
Pen Mar , a tiny town straddling the state line