The Minong Ridge Trail is Isle Royale's most difficult and remote backpacking route, covering 26-28 miles of rugged terrain along the island's northern spine. The trail was originally cut as a fire manway in the mid-1960s and is deliberately kept primitive: few bridges, limited boardwalks, and sparse trail markers. It suits experienced backpackers with solid navigation skills who want solitude and are comfortable hiking cairn to cairn across exposed rocky ridgelines. At any given time there are more moose on the island than hikers, and double-digit moose sightings are common. From the ridge you can see Lake Superior and the Canadian shoreline to the north, with interior lakes and the Greenstone Ridge to the south. Plan for 3-4 days from McCargoe Cove to Windigo, though most backpackers need an additional 2 days to reach McCargoe Cove from Rock Harbor, which makes this a 5-6 day trip requiring substantial food and fuel.
All overnight camping at Isle Royale requires a free backcountry permit, issued when you arrive on the island. There are no advance campsite reservations; all campgrounds are first-come, first-served. The park charges a $7 per person per day entrance fee (or use your America the Beautiful Pass). Groups of 7 or more must make advance group camping reservations and can only camp in designated group sites. Maximum party size is 10 people per itinerary; organizations are capped at 20 people on-island at any time.
Starting in 2025, Isle Royale implemented new food storage regulations. Backpackers must use bear-resistant canisters for all food, trash, and scented items (including sunscreen, lotion, deodorant). In campgrounds with food lockers installed, use those instead. Otherwise, hang your canister 12 feet high and 6 feet from the nearest trunk, or secure it to a boulder or log at least 200 feet from camp. The park is actively installing food lockers at all campgrounds throughout 2025.
Fires are permitted only at select campgrounds with fire rings. Group size for cross-country camping is limited to 1-6 people only. Full regulations: https://www.nps.gov/isro/planyourvisit/camping-regulations.htm
The island is accessible mid-May through late September, when ferry and seaplane services operate, but the best window for the Minong Ridge is late August through early September. By then the bugs have finally subsided, days are still reasonably long, water sources remain reliable, and temperatures are comfortable (highs in the 60s-70s, lows in the 40s-50s).
Avoid mid-June through mid-July unless you are prepared for relentless mosquitoes and blackflies. Biting insects hatch in late May and peak from late June into early July. Early June adds blackflies on top of cold nights (30s-40s) and daytime highs only in the 40s-60s. Late May has fewer bugs overall, but blackflies can still be miserable some years.
From mid-August onward, insect numbers drop sharply and the whole experience gets easier. September brings shorter days and reduced ferry schedules, so plan accordingly. There is no shoulder season to consider: the park simply closes November 1 through April 15 annually.
Water planning is critical on the Minong Ridge. The hardest section is the 12.6-mile stretch from North Lake Desor to Windigo, which has no reliable, clean water sources along the trail itself. Before leaving North Desor, fill every bottle and consider carrying a 2-liter dirty water bag to filter en route. Three beaver dams and a few streams cross this section, but the water is typically brown, smells septic, and requires aggressive filtration. One hiker described filtering "brown water" at multiple beaver dams: functional but far from ideal.
From McCargoe Cove to Todd Harbor (6.7 miles), water access is limited. Between Todd and Little Todd (6.8 miles), approximately three streams cross the trail. The Little Todd to North Desor section (5.7 miles) has one stream and a beaver dam. Carry 3+ liters between campgrounds and treat everything.
There is no resupply on-island. The closest resupply town is Houghton, Michigan, on the mainland, though most backpackers stock up before boarding the ferry. Mail drops are not practical for typical 5-6 day trips. Plan to carry all food and fuel from the mainland.
The Minong Ridge Trail has a reputation as Michigan's hardest hike, and several things account for it:
Navigation: Much of the trail follows rocky ridgelines where cairns are the only indication you are on route. No other Michigan trail uses cairns so extensively, and missing one can lead to significant off-trail wandering. Bring a map, compass, and GPS. The NPS describes this as a trail "for experienced backpackers with navigation skills."
Beaver dam crossings: At least four major beaver dam crossings punctuate the route, and most search-and-rescue incidents occur when hikers get disoriented trying to work through them. Your feet will sink into muck; there simply are no spots that support body weight. Wear quick-drying shoes or ankle-high waterproof boots. Getting lost in these crossings burns time and water, which leads to dehydration.
Blowdowns: Recent trip reports counted 79 blowdowns between McCargoe and Todd Harbor alone. Each one is manageable on its own, but together they add real time and energy expenditure.
Rocky terrain: Long stretches across exposed bedrock ridges are jarring on ankles and tough on knees. When wet, the ridgeline becomes dangerously slick. Trekking poles are essential. Multiple hikers report taking "several spills in a storm."
Exposure: The open ridgelines that provide the views provide no protection from weather. Be prepared for sudden storms, high winds, and temperature drops.
Wildlife: Moose encounters are frequent. Give them a wide berth; moose are unpredictable and dangerous, especially cows with calves. The island's tiny wolf population is rarely seen but present.
Limited maintenance: The NPS deliberately keeps this a primitive route with minimal trail work each season. Expect conditions to change year to year.
Isle Royale sits 56 miles offshore in Lake Superior and can only be reached by ferry or seaplane. Most Minong Ridge hikers combine transportation options to avoid backtracking:
Ferry options: - Ranger III (Houghton, MI to Rock Harbor): NPS-operated, 6 hours, runs late May-early September. Website: https://www.nps.gov/isro/planyourvisit/ranger-iii.htm - Isle Royale Queen IV (Copper Harbor, MI to Rock Harbor): Private ferry, 3+ hours, runs early May-late September. Website: https://www.isleroyale.com/ - Voyageur II / Sea Hunter III (Grand Portage, MN to Windigo/Rock Harbor): Multi-stop routes, runs June-early September. Website: https://www.isleroyaleboats.com/
Seaplane: Isle Royale Seaplanes flies from Hubbell, MI to both Windigo and Rock Harbor. Flights take 45 minutes, operate mid-May through mid-September, and let you get picked up at the opposite end from where you started. Faster but more expensive. Website: https://www.isleroyaleseaplanes.com/
Parking: Long-term parking is available at all mainland ferry terminals. The seaplane base charges $8/day, or $16/day for oversize vehicles.
Strategy: Many hikers take the Ranger III from Houghton to Rock Harbor, hike 2 days to McCargoe Cove, complete the Minong Ridge west to Windigo over 3-4 days, then take the seaplane back to the mainland. This avoids backtracking and breaks up the journey.
All ferry and seaplane services require advance reservations. Book early; summer weekends fill up.
Campsite strategy: The 12.6-mile North Desor to Windigo section is brutal if you run low on water or arrive late. Start early from North Desor; 5:00-6:00 AM is not excessive. Some hikers push this section in 7.5 hours, but plan for 8-10. The 5.7-mile Little Todd to North Desor section looks short on paper but typically takes a full day because of rough terrain and beaver dams.
Shelter availability: McCargoe Cove and Todd Harbor have three-sided shelters (first-come, first-served), which are excellent in rain but fill fast. The shelters at McCargoe look out over the cove. Little Todd and North Desor have tent sites only, no shelters. Washington Creek (Windigo) has shelters. Always bring a tent.
Footwear: Bring shoes that can get soaked and dry quickly. The beaver dam crossings guarantee wet feet. Some hikers carry camp shoes or sandals just for these crossings to keep their boots dry, though this adds weight.
Water filtration: Carry a filter that can handle turbid, sediment-heavy water. Sawyer Squeeze and similar filters can clog quickly on brown beaver dam water, so bring a cleaning syringe or a backup.
Navigation tools: Download offline maps. Cell service is nonexistent. Bring paper maps as backup. The trail is poorly marked in sections, and fog on the ridgeline can reduce visibility to near zero.
Cairn-following technique: On open ridgeline sections, stop at each cairn and visually locate the next one before proceeding. If you cannot see the next cairn, you may be off-route.
Bugs: If you must hike during peak bug season (mid-June to mid-July), bring a head net, long sleeves, long pants, and permethrin-treated clothing. Bug pressure is intense without protection.
Moose photography: The Minong Ridge's lowland sections and beaver ponds are prime moose habitat. Early morning and evening are the best times for wildlife viewing. Maintain 25+ yards distance.
Thimbleberries: Mid-summer brings ripe thimbleberries along certain sections. They are delicious, but they grow on slopes with steep drop-offs camouflaged by foliage, so watch your footing.
Timing your trip: If you have flexibility, monitor Isle Royale Forums (https://isleroyaleforums.com/) for recent trip reports in the weeks before your departure. Conditions such as blowdowns, beaver dam water levels, and bug intensity change year to year.
Pick your trailheads, choose campsites, and build a day-by-day itinerary. Hikeset tracks your gear, meals, and group so nothing gets left behind.
Start PlanningFree account. No credit card needed.
Hikeset Beta