Lake Williams Trail 4, 4A, 4B

Head out on this 3.4-mile loop trail near Seven Valleys, Pennsylvania. Generally considered a moderately challenging route, it takes an average of 1 h 32 min to complete. This trail is great for birding, hiking, and horseback riding, and it's unlikely you'll encounter many other people while exploring. You'll need to leave pups at home — dogs aren't allowed on this trail.