Isle Royale National Park
Michigan Est. 1940

Isle Royale National Park

Island Lake Forest
Established
1940
Size
571,790 acres
Visitors / yr
28.8K
Entrance
$7/day
Best season
June through September
Nearest airport
CMX Houghton County Memorial
Park Closure: Malone Bay Campground Shelters Reserved July 21 - July 24, 2026 +3 more Wildfire Tracker
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Why Isle Royale is worth the trip

Michigan · Established 1940

Isle Royale is a 45-mile-long island in Lake Superior with no roads, no cars, and a long ferry or floatplane ride between you and it. Nobody wanders in by accident. It ranks among the least visited parks in the system, yet rangers like to say it is the one people most often come back to, and both facts have the same explanation.

The island runs on moose and wolves. Their predator-prey standoff has been studied continuously since 1958, the longest-running study of its kind, and 165 miles of trail let you walk straight through the dataset. Moose sightings are common. Loons own the coves. Backpack the Greenstone Ridge, paddle the inland lakes, or dive the cold-preserved shipwrecks, and plan on days, not hours. Isle Royale does not do day trips well, and that is its best quality.

Before you go

Get the Isle Royale heads-up

Permit windows, closures and seasonal alerts, plus our best Isle Royale guides, in your inbox before you go. Free, no spam.

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Plan your trip

Our guides for the big decisions, plus the gear, maps and lodging we would actually use for Isle Royale.

Where to stay

Gateway towns with lodging, food and outfitters.

  • Houghton, MIGateway town
  • Copper Harbor, MIGateway town
  • Beaver Island Campground 3 sites
  • Belle Isle Campground 7 sites

Maps & guides

Carry paper. Cell service dies fast inside most parks.

Isle Royale Trails Illustrated map
Waterproof National Geographic topo of the park.
View on Amazon
Isle Royale field guide
Trail-by-trail detail and planning help in print.
View on Amazon
America the Beautiful pass
$80 a year. Covers entrance fees at more than 2,000 federal recreation sites.
Get the pass

What to bring

Field-tested picks we bring on park trips.

  • Bear Spray
    Required carry in grizzly country. Practice the quick-draw before you need it. View on REI
  • Trail Shoes
    Lightweight with good traction for maintained trails. View on REI
  • Rain Jacket
    Mountain weather turns fast. Pack a shell even on clear mornings. View on REI
  • Merino Hiking Socks
    Prevent blisters and keep your feet comfortable for miles. View on REI

Getting there

  • CMX Houghton County Memorial 5 mi
  • DLH Duluth International 220 mi

Some links in this section are affiliate links. If you book or buy through them we earn a small commission at no extra cost to you. We only recommend what we would use ourselves.

Isle Royale map

VC Visitor Center CG Campground Nearby Park
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When to go

Loading weather...

Month-by-Month Conditions

Tap any month for details

Month
High
Low
Crowds
Roads
Jan
23°
11°
Low
Closed
Feb
25°
10°
Low
Closed
Mar
34°
17°
Low
Closed
Apr
44°
28°
Low
Open
May
55°
36°
Light
Open
Jun Best
63°
43°
Peak
Open
Jul Best
69°
50°
Peak
Open
Aug Best
71°
54°
Peak
Open
Sep Best
62°
47°
Heavy
Open
Oct
52°
38°
Low
Open
Nov
39°
28°
Low
Closed
Dec
28°
18°
Low
Closed
Best months to visit Crowd level (low to peak)

Worth protecting

Isle Royale belongs to all of us

Protections that took generations to win can be rolled back in a single session of Congress. We keep watch so they hold.

Threatened Lands Map

Follow what's happening on federal lands across the country with our interactive map.

View the Tracker