Minong Ridge Section 4 - 13mi Strenuous Hike

A person with a backpack hikes along a beaver dam near a beaver pond surrounded by forest.

This is the longest and most remote section of Minong Ridge Trail—13 miles of primitive, relentless terrain that tests both legs and navigation skills. Steep inclines, rocks, roots, and active beaver dams dominate the route, while pristine ridgeline views and a serene cedar forest boardwalk reward your effort. This is not a casual ridge walk; it demands strong backcountry experience, careful footwork over beaver dams, and precise navigation. Experienced backpackers commit to this solo, but only those comfortable with exposure, isolation, and water rationing should attempt it.

Quick facts

Distance Miles: 13
Route Type: Point-to-point (North Desor to Windigo) or out-and-back if returning same route
Difficulty Level: Strenuous / Expert-only
Elevation Gain Feet: 0

Trail profile

Distance Miles: 13
Route Type: Point-to-point (North Desor to Windigo) or out-and-back if returning same route
Difficulty Level: Strenuous / Expert-only
Elevation Gain Feet: 0
Estimated Time: 6-8 hours of hiking; plan full day including navigation checks and beaver dam crossings
Trail Surface: Rocky, root-filled, steep terrain with boardwalk sections through cedar forest. 18 inches wide throughout.
Trail Features: Beaver dams (active, unstable footing)
Boardwalk through cedar forest
Rocky and rooty terrain
Steep ridgeline sections
Wildfire remnants
Lake Superior views
Pristine backcountry landscape
Trail Highlights: The longest section of primitive Minong Ridge delivers solitude, challenging ridgeline hiking, and Lake Superior vistas. The cedar forest boardwalk provides respite from rocky climbing. Wildlife encounters (black bears, moose if fortunate) add to the wilderness experience.

Trailhead & access

Trailhead Location: North Desor Campground. Access via ferry to McCargoe Cove or connection from Greenstone Ridge Trail via Rock Harbor.
Parking Lot Size: N/A—island access by ferry only. No vehicle parking at trailhead.
Parking Fill Time: N/A—ferry-based access. Book ferry reservations well in advance (4-6 months for peak season).
Shuttle Required: 1
Shuttle Details: Voyageur II passenger ferry required from Houghton, MI. Reservations mandatory; operates May-September. Ferry schedule and fares: nps.gov/isro/planyourvisit/voyageur-ii.htm. Return ferry from Windigo must be reserved separately.

Permits & conditions

Permits Required: Yes
Permit Details: Backcountry camping permit required for overnight stays. Isle Royale National Park permit system: nps.gov/isro/planyourvisit. Reserve permits in advance, especially summer (June-August). Day hiking does not require a permit; backcountry camping does.
Fees: $7 per person per day to enter Isle Royale (children 15 and under free). America the Beautiful Pass ($80 annual) covers entrance fees. Ferry fare separate; contact Voyageur II for current rates.
Trail Status: Open seasonally; park closed November 1 - April 15
Seasonal Closures: November 1 - April 15 (park closure due to extreme winter weather and lake conditions; transportation ceases October)

Facilities & rules

Restrooms At Trailhead: 0
Water Sources: No reliable water sources along trail. Purify water at Lake Desor before departing North Desor Campground. Non-negotiable for 13-mile section. Carry 3L minimum with filtration/purification. Failure to plan for water is dehydration risk.
Accessibility: Not accessible. Trail 18 inches wide with rocks and roots throughout, steep inclines, slippery boardwalks, and unstable beaver dam crossings. Suitable only for experienced, fit backpackers without mobility limitations.

Safety & strategy

Hazards: Steep inclines throughout
Rocky and root-filled terrain
Slippery boardwalks when wet
Unstable beaver dam crossings
Narrow trail (18 inches) with exposure
No water sources along trail
Changing trail conditions
Weather exposure (wind, lightning)
Isolation (limited rescue)
Navigation challenges
Hazard Details: Trail is primitively maintained and only 18 inches wide. Rocks and roots throughout create ankle-twist hazards. Steep inclines demand careful foot placement. Boardwalks extremely slippery when wet; misstep means injury. Beaver dams actively inhabited; shift without warning with unstable footing. Trekking poles essential to test dam stability. No water for 13 miles creates dehydration risk. Changing conditions due to beaver activity require constant map/compass verification. Exposed ridgeline hazardous in lightning storms or high winds. Remote location means no cell service and limited ranger patrols.
Cell Service: None—assume no cell coverage. Remote island location; no communication devices function.
Crowd Level: Light to moderate—remote location and ferry access limit crowds, but mid-summer sees increased traffic
Peak Crowd Times: July-August (peak summer season)
Best Season: Summer (June-August for stable weather; ferry operates May-September)
Best Time To Visit: Late May through September. Park opens April 16, but transportation services and stable weather align with May-September. Start by dawn or earlier to maximize daylight on this navigation-heavy trail. Peak crowds in July-August; consider June or September for fewer hikers and potentially better ferry availability.
Tips Advice: Trekking poles mandatory for beaver dam crossings—test footing before each step.
Carry 3L water minimum. Purify at Lake Desor before departing; no water sources for 13 miles.
Start before dawn. Changing conditions and 18-inch-wide trail make darkness hazardous.
Confirm current beaver dam and boardwalk conditions with Windigo Visitor Center (seasonal, May-September).
Make noise while hiking—black bears inhabit the island.
Navigation non-negotiable: bring map, compass, GPS, and know how to use all three.
Book Voyageur II ferry reservations 4-6 months in advance for peak season.
Waterproof your gear; boardwalks drip and weather is unpredictable.

More details

Park Area: Minong Ridge Trail, Isle Royale National Park
Trail Markers: Parts marked with cairns, but marker density varies. Changing conditions (beaver activity, seasonal damage) make markers unreliable as sole navigation. Map, compass, and GPS mandatory. Navigation skills essential.
Dogs Allowed: No—pets not permitted on Isle Royale trails or island
Biking Allowed: No—hiking only; backcountry terrain unsuitable for bikes
Shade Level: Partial to mixed. Cedar forest boardwalk provides shade; exposed ridgeline offers full sun. No consistent shelter. Wear sun protection; ridge exposure increases UV and windchill.
Emergency Contacts: Windigo Visitor Center (seasonal, May-September) and nearby ranger stations. For emergencies, contact via Ranger III or Voyageur II ferry radio. Inform a ranger of your itinerary and expected Windigo exit before starting. Life-threatening emergencies require evacuation via ferry or Coast Guard helicopter.
Map Recommended: 1
Snow Dates: October-May (approximately). Trail closed as part of park closure November 1 - April 15. Snow typically accumulates late October; ground snow-covered October-May depending on year.
Mud Season: April-May (spring snowmelt and rain). Trail becomes boggy and slippery; mud on boardwalks increases slip hazard.
Bug Season: June-August peak, especially near water and beaver areas where mosquitoes thrive. Bring high-DEET insect repellent and long sleeves/pants for dawn/dusk hiking.
Insider Tips: 'Longest section' means isolation—expect hours without seeing other hikers or rangers.
Beaver dams appear stable but are not. Move with trekking poles; never jump or rush.
The boardwalk through cedar forest near the end will seem like a mirage—enjoy it but stay alert; it's slippery.
False summits common on ridgelines. Ridge continues beyond obvious high points; check your map.
Lake Desor is your only reliable water; fill every container. Don't ration so aggressively you arrive severely dehydrated.
Trail conditions change weekly during summer due to beaver activity. Call ahead; current info is gold.
Descending harder than ascending on this terrain. Budget extra time if out-and-back.
Start in darkness if needed to maximize daylight for navigation. Headlamp essential.
Recent Updates: Check with Windigo Visitor Center (nps.gov/isro, seasonal May-September) for current beaver dam stability, boardwalk condition, and recent trail damage from weather or wildlife activity.
Family Friendly Notes: Not recommended for children or families. Steep inclines, beaver dam crossings requiring technical footwork, lack of water sources, primitive terrain, and remote location unsuitable for young hikers or families without strong backcountry skills and self-sufficiency.
Nearby Facilities: North Desor Campground (starting point), Washington Creek Campground and Huginnin Cove Campground (nearby), Windigo Visitor Center (endpoint, seasonal), Windigo Camp Store (basic supplies), Windigo Marina (ferry terminal).
Review Summary: Experienced backpackers respect Minong Ridge Section 4 for its remoteness and challenging terrain. Hikers consistently report lack of water as the true test. Those who underestimate turn back; those who prepare thoroughly find it deeply rewarding. The route attracts a small, committed community of serious backcountry hikers.

Location

Frequently asked questions

Are there bears on this trail?

Yes. Black bears inhabit Isle Royale. Make noise while hiking to avoid surprise encounters. Maintain 100+ yards distance. Store food in bear canisters at campsites. Camp 100+ yards from water sources.

Do trekking poles really make a difference on beaver dams?

Absolutely. Poles let you test dam stability before committing full weight. They distribute balance across three points. On slippery or shifting dams, poles prevent falls that could result in injury hours from rescue.

What if Lake Desor is frozen or inaccessible?

This is a critical risk in shoulder seasons. Confirm water availability with Windigo Ranger Station before starting. If Lake Desor is unreachable, do not attempt this 13-mile section—no other water exists along trail.

Can I turn back mid-trail if exhausted?

Yes, but retrace your exact route back to North Desor. No bailout points or shortcuts exist. If you turn back at mile 6, you've now hiked 12 miles (6 out, 6 back). Plan turnaround time carefully to avoid hiking in darkness.

How early must I start to finish before dark?

Before dawn (4:30-5:00 AM in summer). 13 miles on difficult terrain at 2 mph average = 6-7 hours minimum. Add navigation time, rest, and slow beaver dam crossings. You need 8+ hours daylight. Starting later risks hiking treacherous boardwalk and beaver sections in low light.

Is this trail marked well enough to do solo?

Marked minimally with cairns, but changing conditions and ridge bifurcations demand map/compass/GPS skills. Solo is possible if confident in navigation. Bring a partner if uncertain; this is not the place to get lost.