Hiking on Isle Royale: The Best Trails for Every Skill Level

By David Sanchez · Data: National Park Service · ← Complete guide Isle Royale

Isle Royale is an island covering more than 208 square miles in the middle of Lake Superior. You can reach it only by ferry or seaplane, and there isn't a single road open to cars. Hiking isn't just one option among several here. It's the only way to get around the island on foot, which completely changes how you need to plan your trip.

The must-do hike: Sugarloaf Mountain from Rock Harbor (2.0 miles round-trip, about 1 hour). It's short and accessible, and the 360-degree view from the summit over the archipelago and Lake Superior is well worth the climb. Two alternatives depending on how much you want to take on: Scoville Point Loop (4.0 miles, 2 hours, coastal cliffs) for a half-day hike without much effort; the Greenstone Ridge section to Mount Franklin (about 6.2 miles round-trip, 4 hours) for hikers who want a taste of the island's backbone without committing to the full traverse.

Planning Your Isle Royale Hike

Permits and Entrance Fees

The entrance fee is $7 per person per day. You don't need a special permit for day hikes. Just pay the fee when you arrive. You do need a wilderness camping permit for any night outside designated campgrounds. The Isle Royale camping guide explains the reservation process and available sites.

No Dogs, No Exceptions

Dogs are strictly prohibited on the island, with no exceptions. The rule protects the resident wolf population, which is vulnerable to canine diseases.

Water: Always Filter It

You won't have trouble finding water from lakes, rivers, and streams, but you must filter or treat it before drinking. Giardia is a real risk in all surface water. Bring a filter or purification tablets on every outing once you leave the Rock Harbor or Windigo facilities.

Wildlife: Moose and Wolves

The island is home to about 2,000 moose in a relatively small area, so encounters on the trails are common. Keep your distance, at least 100 feet, and never get between a cow and her calf. Wolves also live on the island, but they avoid contact with people. You may hear them howling in the evening, which is a rare experience in itself. For advice on how to behave around moose and information about wolf ecology, Isle Royale wildlife goes into more detail.

Isolation and Safety

There is no cell service on the island. In an emergency, evacuation is by boat or plane, and it can take several hours depending on the weather. Tell someone your itinerary before heading into the backcountry. Carry a complete first-aid kit. Don't underestimate Lake Superior weather. Storms can form quickly, and temperatures sometimes drop by 18°F in a few hours, even in midsummer.

The Best Hikes, Area by Area

Isle Royale has two main gateways: Rock Harbor on the east side, which is the busier one, and Windigo on the west. The central Greenstone Ridge connects the two ends of the island across more than 65 miles.

Rock Harbor Area (East Side of the Island)

Rock Harbor is the main landing point for ferries from Copper Harbor and Houghton, Michigan. Nearly all trails on the island's east side start there.

Sugarloaf Mountain Distance: 2.0 miles round-trip. Elevation gain: about 230 feet. Duration: 1 hour. Difficulty: easy to moderate. Type: out-and-back. The trail passes through the forest before emerging onto a completely open rocky summit. The view takes in the eastern end of the island, the Rock Harbor channels, and, on a clear day, Michigan's distant shores. A few rocky sections on the final climb present no technical difficulty. Trailhead: from the Rock Harbor visitor center, a short walk from the dock, about 5 minutes. Tip: start early to catch the low morning light on the lake.

Scoville Point Loop Distance: 4.0-mile loop. Elevation gain: minimal. Duration: 2 hours. Difficulty: easy. Type: loop. This loop follows the coastal cliffs to Scoville Point, a rocky promontory battered by Lake Superior waves. You'll regularly see common loons and harlequin ducks. There are no technical sections. Trailhead: from Rock Harbor Lodge.

Lookout Louise Distance: about 5.0 miles round-trip from Rock Harbor, or shorter from Tobin Harbor. Elevation gain: moderate. Duration: 2.5 to 3 hours. Difficulty: moderate. Type: out-and-back. The Lookout Louise overlook offers a much-sought-after view of the inland channels and dense vegetation on the island's east side. The climb is gradual, with no difficult sections. Tip: combine it with the Tobin Harbor Trail for a change of scenery on the way back.

Rock Harbor Trail (to Moskey Basin) Distance: about 8.7 miles round-trip. Elevation gain: minimal. Duration: 4 to 5 hours. Difficulty: easy. Type: out-and-back. This gently rolling coastal trail is ideal if you want some distance without significant elevation gain. It follows the Rock Harbor channel to Moskey Basin Campground, alternating between woods and water views. It's one of the best trails for spotting moose at dusk. They frequent the lakeshore at that time of day.

Windigo Area (West Side of the Island)

You can reach Windigo by ferry from Grand Portage, Minnesota. This area is considerably wilder and less crowded than Rock Harbor.

Huginnin Cove Loop Distance: about 9.3-mile loop. Elevation gain: moderate. Duration: 4 to 5 hours. Difficulty: moderate. Type: loop. This is the standard day trip from Windigo. The loop alternates between the North Shore, with cliffs exposed to Lake Superior and often rough water, and the forested interior. The scenery changes quickly, and the trail is well marked. Trailhead: from the Windigo ranger station, a short walk from the dock.

Feldtmann Ridge Loop Distance: about 22-mile loop. Total elevation gain: significant. Duration: 2 to 3 days. Difficulty: difficult. Type: loop. This route is for experienced hikers who are prepared to spend at least two nights in the backcountry. The loop passes Feldtmann Lake, an excellent area for moose sightings, Feldtmann Ridge, with open views of Lake Superior from higher ground, and Siskiwit Bay Campground. A wilderness camping permit is required. Check availability ahead of time on the NPS website.

Greenstone Ridge: The Island's Backbone

Greenstone Ridge Trail (Full Traverse) Distance: about 65 miles from one end of the island to the other. Total elevation gain: about 4,900 feet. Duration: 5 to 8 days. Difficulty: difficult. Type: one-way, Rock Harbor to Windigo or the reverse. The trail follows the island's central ridge from northeast to southwest, with repeated views of both Lake Superior shorelines and the inland channels. The logistics are demanding. You'll need a ferry on one end, a ferry on the other, backcountry camping every night, and enough food and water to be completely self-sufficient. For experienced backpackers, though, it's an experience on a different level from the more accessible national parks.

Greenstone Ridge Day Sections The Rock Harbor to Mount Franklin section, about 6.2 miles round-trip and 4 hours with moderate difficulty, gives you a good sense of the trail without committing to a multiday trip. Expect dense woods, clearings, and a few overlooks toward the island's east side. You can access it directly from Rock Harbor.

Easy, Family-Friendly Hikes

Getting to Isle Royale takes some logistical effort. You need a ferry, reservations, and a budget for the trip. Once you're on the island, several trails work well for kids and less experienced hikers.

The Scoville Point Loop (4.0-mile loop with almost no elevation gain) is our top recommendation for families. The terrain is even, you get frequent lake views, and the distance is manageable for kids who are comfortable walking for 2 hours.

The beginning of the Rock Harbor Trail (1.2 to 2.5 miles depending on how far you want to go, flat and along the water) works for kids as young as 6. You can turn around whenever you like.

Families should keep a few things in mind. No strollers can manage the trails, and there is no food service outside Rock Harbor Lodge. Bring a picnic and enough water for the day.

Challenging Day Hikes

For a full day with elevation gain and panoramic views, two options stand out.

The Sugarloaf Mountain and Lookout Louise combination (about 7.5 miles total from Rock Harbor, 4 to 5 hours) gives you two very different viewpoints of the island without exceeding what an average-fit hiker can handle.

The Greenstone Ridge section to Mount Franklin (6.2 miles round-trip, 4 hours, moderate difficulty) is more demanding. The trail climbs, the vegetation changes with elevation, and views appear through breaks in the canopy. It's the right kind of day hike for anyone who wants to experience the island from above without camping.

From Windigo, the Huginnin Cove Loop (about 9.3 miles, 4 to 5 hours) is the wildest day-hike option. Expect an exposed North Shore, dense forest, and very few people on the trail.

Accessing Trailheads

There are no roads for cars on the island, so parking works differently here. You arrive by ferry and set out on foot.

From Rock Harbor, all the east-side trailheads are reachable on foot from the dock in less than 15 minutes. The ranger visitor center provides trail maps as soon as you come ashore.

From Windigo, the setup is the same on the west side. The Windigo ranger station is the natural starting point for all trails in the area.

For mid-island trails and the Greenstone traverse, a water taxi runs from Rock Harbor to some intermediate campgrounds. You can use it to drop off gear at a farther campground and hike lighter for the day.

For ferry schedules and reservations from Michigan or Minnesota, find all the details in getting to Isle Royale.

When Should You Hike Isle Royale?

The island is open from April 16 through October 31. Ferries run only between May and September. Outside that window, you can still arrive by private seaplane, but visitor services are very limited.

July and August are the busiest months. Days are long, temperatures range from 59°F to 72°F during the day, and rain is possible but manageable. Mosquitoes and black flies are especially bad in June and early July. DEET insect repellent is essential on the trails then.

September is our favorite month. The insects have almost disappeared, the vegetation takes on its fall colors, moose are more active during the rut, and the island is much less crowded. Nighttime temperatures drop, so bring extra layers for camping, but days remain pleasant.

For month-by-month conditions, when to visit Isle Royale provides seasonal climate guidance.

Which Hike Fits Your Trip?

To plan your entire island trip, including lodging, access, and activities, our Isle Royale guide brings together all the practical information.

Frequently Asked Questions