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66.9 km
~3 days
2787 m
Multi-Day
“Embark on the Black Forest Trail for a rugged, scenic trek through Pennsylvania's untamed woodland splendor.”
The Black Forest Trail, a challenging loop that spans approximately 66 kilometers (41 miles), offers hikers an immersive experience in the dense woodlands of Pennsylvania's Tiadaghton State Forest. With an elevation gain of around 2100 meters (nearly 6900 feet), this trail is not for the faint-hearted but rewards with stunning vistas and a true wilderness adventure.
To reach the trailhead, located near Slate Run in Lycoming County, Pennsylvania, hikers can drive to the small parking area on Slate Run Road. For those relying on public transport, the closest major city with bus and rail services is Williamsport, Pennsylvania. From there, a combination of local buses and taxis can get you to the trailhead, though service may be limited, and planning ahead is essential.
As you embark on the Black Forest Trail, prepare for steep climbs and descents that will test your endurance. The trail is marked with orange blazes, and while navigation is generally straightforward, carrying a reliable GPS tool like HiiKER is advisable to stay on track.
Early in your journey, you'll encounter the Naval Run Overlook, offering expansive views of Pine Creek Gorge, often referred to as the "Grand Canyon of Pennsylvania." Approximately 10 kilometers (6 miles) in, you'll reach the highest point on the trail, with panoramic views that are particularly breathtaking in the fall when the foliage is ablaze with color.
Wildlife is abundant, and it's not uncommon to spot white-tailed deer, black bears, and a variety of bird species. The trail also meanders past numerous streams and waterfalls, including the picturesque Callahan Run.
The region's history is deeply rooted in the timber industry, and as you hike, you'll pass remnants of old logging camps and witness the second-growth forest that has emerged following the lumber boom of the 19th and early 20th centuries.
Given the trail's length and elevation changes, it's recommended to allocate 3 to 4 days to complete the loop comfortably. There are several primitive campsites along the route for overnight stays. Ensure you pack enough food, water purification methods, and bear-proof containers for food storage.
The trail is accessible year-round, but spring and fall are the most popular times to hike due to milder temperatures and reduced insect activity. Winter hiking is possible but requires preparation for cold temperatures and potentially deep snow.
Always practice Leave No Trace principles to preserve the trail's natural beauty. Be prepared for rapidly changing weather conditions and carry a first aid kit. Cell service can be spotty, so inform someone of your plans before you depart.
By respecting these guidelines and preparing adequately, hikers can look forward to an unforgettable experience on the Black Forest Trail, where the rugged terrain of Pennsylvania's wilderness awaits.
What to expect?
Activity types
The Black Forest Trail is 66.9 km, or about 41.6 miles, with 2,787 m of climbing, so most backpackers take 2 to 4 days to complete the full loop. Strong hikers sometimes finish it in a very long single day, but the repeated steep ascents and descents above Slate Run, Naval Run, Morris Run, and Pine Creek make it a demanding route.
The main Black Forest Trail access is near Slate Run in Lycoming County, Pennsylvania. The loop begins and ends on a state forestry road about 0.8 mile from Slate Run Village, and the usual parking area is off Slate Run Road near the village along PA Route 414, which is the standard starting point for the full circuit.
The Black Forest Trail is a loop in Tiadaghton State Forest, so it returns to the starting area near Slate Run rather than requiring a shuttle. The full circuit covers 66.9 km through rugged forested terrain in northwestern Lycoming County and is known for linking a series of steep hollows, stream valleys, and ridge-top overlooks.
The Black Forest Trail is generally rated medium overall, but it feels strenuous because 66.9 km of trail packs in 2,787 m of elevation gain. The difficulty comes from constant up-and-down hiking, long climbs out of creek drainages, rocky and rooty tread in places, and the remote setting in Tiadaghton State Forest rather than any technical scrambling.
The Black Forest Trail is best known for big overlooks above Pine Creek and the deep hollows around Slate Run. Named highlights include vistas over Naval Run, Morris Run, Big Dam Hollow, and Pine Creek, and many hikers single out the Naval Run Overlook as one of the standout viewpoints on the loop.
Fall is often considered the best season for the Black Forest Trail because the high ridges above Pine Creek and Slate Run are especially scenic when the hardwood forest changes color. Spring can also be beautiful, but higher water can make the trail’s many creek crossings more challenging, while summer often brings heat, humidity, and bugs in the hollows.
Yes. The Black Forest Trail crosses multiple creeks and runs as it loops through the dissected terrain around Slate Run, Morris Run, Naval Run, and Big Dam Hollow. In dry conditions many crossings are straightforward, but after rain or during spring runoff they can become a bigger factor in timing and route difficulty.
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