Hike the Acadia Mountain Loop with Island Explorer Bus
What to Expect
Safety Advisory
The west-side descent toward Somes Sound is genuinely steep with smooth granite slabs that become slick when wet — wear shoes with real tread and avoid this route after rain or morning dew.
Several sections involve exposed rock scrambling without railings or steps — this trail is labeled accessible but the loop portion is not wheelchair-friendly despite the official tag, so plan accordingly if mobility is a concern.
Trail Details
Pro Tips
Take the Island Explorer Route 7 (Southwest Harbor) and get off at the Acadia Mountain trailhead — it runs frequently in summer and saves you from the narrow, shoulder-less parking situation on Route 102 that fills up by mid-morning.
Hike the loop counterclockwise (east side up, west side down) so you're ascending the gentler grade and descending the steeper, more technical section with better footing control — going up the west side on wet granite is asking for trouble.
The best photo op isn't at the true summit — it's the open ledge about two-thirds of the way up on the east side where Somes Sound stretches out below you without any tree obstruction. Afternoon light hits the water perfectly from late June through September.
Photos
NPS Photo