The Dorr Mountain South Ridge Loop features panoramic views of Mount Desert Island from the top of Dorr Mountain and offers a strenuous beginning climb with a long descent through the forest.
- Distance: 3.2 miles round trip
- Terrain: Forested path, granite ridgeline, uneven surfaces, iron rungs and ladders
- Start at the parking area off Maine Route 3, just past the Tarn and Sieur de Monts Entrance.
- Follow signs for the Ladder Trail. Continue to the intersection with Kane Path.
- Continue straight on the Ladder Trail. Begin a steep ascent for .4 miles up granite boulders, steps, and a series of iron rungs. This section can be very slippery when wet. Use caution.
- At the intersection with Schiff Path, continue straight (up) towards Dorr Mountain.
- The trail remains fairly steep for .4 miles as you ascend the cliff face.
- At the trail junction, turn left and continue for .1 miles to reach the summit of Dorr Mountain.
- Begin the descent down Dorr South Ridge Trail for 1.2 miles through a forested area.
- At the base of the mountain, turn left at the intersection with Canon Brook Trail.
- Continue for 1 mile along a fairly level path.
- At the intersection with Ladder Trail and Kane Path, turn right and return to the parking area.
Dorr South Ridge Loop is not accessible. The trail has uneven footing, steep sections, stairs, and iron rungs.
There are no accessible restrooms at the trailhead.