Cook Forest State Park
Cook Forest State Park is an 8,500-acre Pennsylvania state park in northwestern Pennsylvania, renowned for its magnificent old-growth forest that is widely regarded as one of the finest ancient forests remaining in the eastern United States. The Forest Cathedral, a National Natural Landmark, features towering 300+ year-old white pines and hemlocks, some reaching over 200 feet tall. The park protects 332 acres of primeval forest and offers exceptional hiking, with trails winding through ancient groves. A scenic 13-mile stretch of the Clarion River flows through the park, providing world-class canoeing, kayaking, and tubing.
Free
Visiting with Dogs
Leashed dogs welcome on most trails and campground; Forest Cathedral accessible. No dogs in swim areas; Clarion River offers water.
Visitor Tips & Reviews
What Visitors Say
Visitors love Cook Forest's cathedral-like 300-year-old trees, Forest Cathedral Trail, Clarion River paddling, fire-tower views, peaceful campgrounds, and year-round solitude.
Tips from Visitors
- Forest Cathedral Trail (1.9 mi) is essential - walk among 300+ year-old towering trees
- Longfellow Trail passes through 332 acres of National Natural Landmark old-growth forest
- Cook Trail at 8.9 miles offers the most comprehensive old-growth forest experience
- Clarion River paddling is excellent - many outfitters rent canoes and kayaks in Cooksburg
- Fire tower offers stunning views when open - check with park office for seasonal hours
- Visit midweek if possible - the ancient forest is most magical in solitude
Amenities
Nearby Attractions
Explore these attractions near Cook Forest State Park:
- Clarion River13-mile scenic stretch through the park perfect for paddling and tubingWithin the park
- Fire TowerHistoric fire tower offering panoramic views of the endless forest (seasonal opening)Within the park
- Clear Creek State ParkNearby state park with additional trails and Clarion River access8 miles away
Things to Do at Cook Forest State Park
Camping at Cook Forest State Park
Cook Forest SP (PA): tent, RV, and cabins; campground mid‑Apr–mid‑Dec. Reserve online; hookups, water, restrooms, showers; quiet 9pm–8am; no alcohol.
Hiking Trails
Forest Cathedral Trail
ModerateEssential trail through towering old-growth forest featuring 300+ year-old white pines and hemlocks. Moderate terrain with some elevation changes through ancient groves.
Cook Trail
ModerateMost comprehensive old-growth forest experience featuring Forest Cathedral, Seneca Point Overlook, and 256 acres of ancient forest heavily dominated by eastern hemlock.
Longfellow Trail
EasyPasses through one of the larger stands of primeval white pine and hemlock. Part of 332-acre National Natural Landmark. Relatively easy terrain.
Seneca Trail
ModerateLoop trail through mixed old-growth and secondary forest with views of Clarion River. Moderate elevation changes.
Directions
Cook Forest State Park is located in northwestern Pennsylvania. From I-80, take Exit 78 (Brookville) and follow PA Route 36 north approximately 15 miles directly to Cooksburg and the park entrance. From the north, take PA Route 66 south to Marienville, then PA Route 36 south to Cooksburg. From the west, take I-80 to PA Route 36 north. The park office is on Route 36 in Cooksburg.