Near Bar Harbor, the 47,500 acre Acadia National Park has miles of horseback riding trails and carriageways on rugged glacier carved mountains and along beaches. Try the 7 mile Cadillac Mountain South Ridge Trail starting from Blackwood Campground. Equestrian camping is also available at Wildwood Stables, where you can also ride right from to explore the trails.
Looking for some seafood after the hike, check out Thurstons in Bernard.
Overall, Acadia National Park is the 1st most popular horse trail of all 3 horseback rides in Maine.