Getting Around Isle Royale: Ferries, Trails, and Water Travel
Isle Royale is the only American national park accessible exclusively by boat or seaplane. You can't bring your car. Getting around here takes more planning than it does in most parks. You'll arrange your crossing from the mainland, park at the port, and then enter a wilderness where you travel on foot, by kayak, or aboard the inter-island ferry.
The short answer: There are no roads on Isle Royale. You explore the entire park on foot and by boat after crossing Lake Superior from Michigan or Minnesota.
Mainland Ports and Island Connections
Three mainland ports serve Isle Royale: Houghton and Copper Harbor in Michigan, and Grand Portage in Minnesota. You'll find detailed schedules, crossing times, and ferry company contact information in the guide to getting to Isle Royale.
The Island's Two Main Gateways
Isle Royale has only two main visitor hubs, one at each end of the island.
Rock Harbor (east) is the main gateway and the better-equipped one. You'll find a visitor center, a lodge, a marina for private boats, a grocery store, and rental equipment such as kayaks. Most hikers arrive here.
Windigo (west) is wilder, quieter, and less crowded. Its visitor center is smaller, but it provides direct access to the island's less-traveled areas. It's a good choice if you'd rather avoid the crowds at Rock Harbor during peak season.
There is no vehicle entrance because there are no roads. The entrance fee, which is $7 per person, is collected when you board or arrive. See the National Parks Fees & Passes page for annual passes and exemptions.
Getting Around the Park
On Foot: Trails Are the Island's Only Real Roads
The trail network covers about 165 miles of marked paths. Getting around here is like traveling in the mountains. You rely on your legs and carry a trail guide. The Greenstone Ridge Trail runs the full length of the island, about 73 miles from west to east. It forms the main route around which the secondary itineraries are organized.
Motor vehicles, bicycles, and horses aren't allowed on the trails. The island is officially wilderness. That's a deliberate NPS choice, not missing infrastructure.
By Boat: The Voyageur II Inter-Island Ferry
The Voyageur II circles the island and makes several stops. It connects Rock Harbor and Windigo and also serves as a shuttle for hikers who want to do point-to-point routes. You can leave your pack at one end, hike, and catch the boat at the other. Functionally, it's a park shuttle on the water. Reserve your seat ahead of time during peak season.
By Kayak or Canoe
Isle Royale is an exceptional sea-kayaking destination. You can rent equipment at Rock Harbor. Lake Superior stays cold year-round, rarely rising above 50°F at the surface, and conditions can turn rough without warning. Some coastal paddling experience is strongly recommended before you venture out.
To plan your route on water or land, see the practical route breakdowns in the Isle Royale itineraries guide.
Where to Park: Mainland Parking Lots
Since your car stays at the dock, you'll only need to think about parking on the mainland.
Houghton. Long-term parking is available near the Ranger III dock. It was free during our last visit, but the NPS may change this policy, so check before you leave.
Copper Harbor. Parking is available along the waterfront, just steps from the Isle Royale Queen IV dock. The town is tiny, and lots don't fill up even in midsummer.
Grand Portage, Minnesota. A developed parking lot is available at Grand Portage National Monument, where boats to Windigo depart. It was also free when this article was written.
In every case, don't leave anything visible inside the car. You may be gone for several days, and break-ins can happen quickly.
Distances and Travel Times Between Areas
The island is about 45 miles long and 9 miles wide at its broadest point. Rock Harbor in the east and Windigo in the west are the two main hubs. Between them, you measure travel in hiking hours or ferry legs.
On foot, the Greenstone Ridge connects the two ends in four to six days of hiking, depending on your pace. A complete circuit on the Voyageur II takes a full day, including stops.
Don't rely on straight-line distances. Elevation and trail detours consistently add to estimated travel times. Our Itinerary & Duration guide offers realistic breakdowns for different trip lengths.
Special Cases: RVs, Accessibility, and Pets
RVs and vans. Your vehicle stays parked at the departure port. You can't bring it to the island, and doing so isn't an option anyway. There are literally no roads. Long-term parking and mainland lodging options are detailed in the Isle Royale RV guide.
Accessibility. Isle Royale is wilderness in the strictest sense. Trails are unimproved, uneven, and sometimes muddy. Rock Harbor Lodge offers some accessible facilities, but much of the park remains difficult to access for people with limited mobility. Contact the park directly before planning your trip to learn about available options.
Pets. Domestic animals are strictly prohibited on the island. They can board the Ranger III on a leash, but they can't set foot on shore. This protects local wildlife, including wolves and beavers.
Practical Travel Information: Cell Service, Fuel, and Planning
Cell service. There is none on the island. Rock Harbor has limited Wi-Fi at the visitor center, but don't count on it for real-time navigation. Download your maps for offline use, including AllTrails and Gaia GPS, before leaving the mainland.
Fuel. There are no gas stations on the island. Private boats can refuel at Rock Harbor, but supplies are limited. Arrive with enough fuel for your trip.
Weather. Lake Superior creates its own weather, often with little warning. Crossings may be canceled or delayed in strong winds. Before each departure, call the park at (906) 482-0984 or check local weather reports. The park's seasonal climate patterns are covered in the Isle Royale weather guide.
Time of day. There are no parking lots to fill up on the island because there are no parking lots. Morning crossings are still preferable so you can make the most of your day once you arrive.
Frequently Asked Questions
How do you get around Isle Royale National Park?
You travel on foot along the trails, by kayak or canoe on inland waters, and by boat aboard the Voyageur II, which connects the island's different stops.
Can you visit Isle Royale by car?
No. Isle Royale has no roads. Your car stays in the mainland parking lot at the departure port. You can reach the island only by ferry or seaplane.
Where do you park to visit Isle Royale National Park?
Park on the mainland at one of the three departure ports: Houghton and Copper Harbor in Michigan, or Grand Portage in Minnesota. The lots were free when this article was written and allow visitors to leave their cars for several days.
Which entrance is best for Isle Royale?
Rock Harbor in the east works for most visitors. It's the best-equipped gateway and is accessible from Houghton or Copper Harbor. Windigo in the west is preferable if you're coming from Minnesota or aiming for the island's less-crowded areas.
Is there cell service in Isle Royale National Park?
No. The island has no cell coverage. Download your maps and information for offline use before you leave, and let people at home know your itinerary.
How long do you need to visit Isle Royale?
The ideal length depends on your hiking goals. Our Itinerary & Duration guide offers two- to six-day trip plans for different ability levels.