Cadillac Mountain South Ridge - 7.1mi Hard Hike

Cadillac South Ridge Trailhead on Acadia National Park offers panoramic rocky summit views of the Gulf of Maine and distant islands.

Cadillac South Ridge Trailhead is a true mountain mission. The 7.1-mile out-and-back climbs ~1,350 ft, moving from forested lower sections to an exposed granite ridgeline with scrambling. Upper ridgeline requires careful footing and attention to wind. Start early, hydrate with 2 liters, and plan for 3-5 hours of hard hiking.

Quick facts

Distance Miles: 7.1
Route Type: Out-and-back
Difficulty Level: Advanced/Difficult
Elevation Gain Feet: 1350

Trail profile

Distance Miles: 7.1
Route Type: Out-and-back
Difficulty Level: Advanced/Difficult
Elevation Gain Feet: 1350
Estimated Time: 3-5 hours (round-trip); 2-5 hours for total hike; typical fit hikers 3-4 hours; 5-6 hours for casual hikers
Trail Surface: Forested lower sections, granite ridgeline, rocky and uneven footing, boulder fields, exposed granite, packed dirt, loose scree, rock stairs, scrambling
Trail Features: Forested lower sections
Granite ridgeline
Rocky footing
Loose scree
Boulder fields
Rock stairs
Scrambling over exposed granite
One iron rung
Trail Highlights: 360-degree summit views of the Atlantic Ocean and surrounding islands; Featherbed Pond stop; Eagle's Crag overlooks

Trailhead & access

Trailhead Location: Roadside along Route 3, opposite Blackwoods Campground entrance
Parking Lot Size: Limited roadside parking along Route 3; peak season fills early
Parking Fill Time: Full by early morning; summer peaks 9 AM-3 PM; plan to arrive by 7 AM
Shuttle Required: 0
Shuttle Details: Island Explorer shuttle stops at Blackwoods Campground; fare-free, mid-June through October; does not service the summit; private shuttle service available for Cadillac Mountain ascents/descents

Permits & conditions

Permit Details: No special permit required for hiking; park entrance pass required May 1–Oct 31
Fees: Park entrance fees apply
Trail Status: Open
Seasonal Closures: Snow and ice can close the trail November–April; winter gear needed during those months

Facilities & rules

Restrooms At Trailhead: 0
Water Sources: None on trail; carry all water
Accessibility: Not wheelchair accessible; rocky and exposed; not stroller-friendly

Safety & strategy

Hazards: Steep drop-offs on exposed ridgeline
Slippery wet rocks
Wind exposure
Ice in colder months
Rock scrambling with a potential fall
Bear presence in the park (not a primary trail concern)
Hazard Details: Upper ridgeline has open granite with significant exposure; winds can be strong and gusty; wet rocks and loose scree demand careful footwork; one iron rung adds minor technicality; bears in the area require standard bear-safety behavior
Cell Service: Dead zones possible in exposed areas; carry map and compass
Crowd Level: High Use Trail; summit crowds common on weekends and in summer
Peak Crowd Times: Weekends and summer, roughly 9 AM–4 PM
Best Season: Late spring through fall (June-October)
Best Time To Visit: Arrive by 7:00 AM in peak season; late spring through fall offers the best conditions; weekdays are quieter than weekends.
Tips Advice: Carry 2 liters water minimum; none on trail.
Wear sturdy boots with solid traction; trekking poles aid stability.
Start cold and layer; summit wind can bite.
Carry map and compass; cell service is unreliable.
Parking is limited—plan to arrive early or have a backup plan.

More details

Park Area: Acadia National Park, Maine
Shade Level: Mixed: forested lower sections, exposed above treeline
Emergency Contacts: NPS; local ranger stations; dial 911 for emergencies
Map Recommended: 1
Snow Dates: Snow and ice typically Nov–Apr; winter conditions require proper gear
Mud Season: Spring can bring mud in lower wooded sections
Bug Season: Mosquitoes and black flies prevalent in late spring and early summer
Insider Tips: For a tougher climb with more scrambling, try the North Ridge Trail.
Start well before dawn for sunrise and to dodge crowds.
Early morning or late afternoon hikes help avoid heat and congestion.
In winter, microspikes or crampons are essential; bring extra layers and a headlamp.
Family Friendly Notes: Exposed sections and rocky terrain may be challenging for families with kids; supervision recommended
Nearby Facilities: Blackwoods Campground facilities; summit parking area restrooms (summit access required for bathrooms)
Review Summary: This trail is a true mountain mission: steep, exposed, and deeply rewarding. Expect summit crowds on busy days, no water on the route, and a terrain mix of forest floor to rugged granite. The payoff is panoramic Atlantic views and distinctive overlooks like Eagle's Crag.