Susquehanna Appalachian Trail Club — A hiking club for the Harrisburg, Pennsylvania region. This club maintains 20 miles of the Appalachian trail plus many other trails around Harrisburg.

Source: Susquehanna Appalachian Trail Club – PAHikes

Lancaster Hiking Club — A hiking club for the Lancaster, Pennsylvania region that provides a program for outdoor recreation and maintaining the Conestoga Trail.

Source: Lancaster Hiking Club – PAHikes

The Alpine Club of Williamsport — Formed in 1953 to help maintain the Loyalsock Trail, this club still has work hikes during the spring as well as monthly outings for hikes through out Northeastern Pennsylvania

Source: The Alpine Club of Williamsport – PAHikes

Standing Stone Trail Hiking Club — The Standing Stone Trail Hiking Club maintains the Standing Stone Trail (formerly the Link Trail) located in south central Pennsylvania. The Standing Stone Trail “links” the Mid State Trail in the center of the state to the Tuscarora Trail in the south. Over 70+ miles in length, the Standing Stone Trail takes you along scenic ridges connecting Greenwood Furnace State Park to Cowan’s Gap State Park.

Source: Standing Stone Trail Hiking Club – PAHikes