Explore Union County Hikes by Distance, Elevation, Difficulty, and More

Check out some of the best hiking, walking and backpacking routes in Union County, Pennsylvania. The Top Mountain Trail is the most popular trail. The trail with the highest elevation climb is the Top Mountain Trail and the trail with the least amount of climbing is the Rapid Run Nature Trail Loop. The longest trail is the Walf Way Lake Loopvia Boiling Spring Trail at 6.9 km. For a shorter adventure you can try the Rapid Run Nature Trail Loop at 2.2 km. Get off line access to History, Campsite, and Peak locations and much more with a Hiiker subscription.