About Us Sources
Rock Harbor Lighthouse on a rocky point at Isle Royale National Park Photo: Ray Dumas / Wikimedia Commons (CC BY-SA 2.0)
All Parks
Michigan · Est. 1940
Park Map PDF

Isle Royale

A roadless island wilderness in northern Lake Superior, reachable only by boat or seaplane — home to the longest continuous predator-prey study in the world.

Weather
--°F
Loading weather…
Wind --
Humidity --
Precip --
Air quality
--
Loading…
PM2.5 --
Ozone --
UV --
NPS alerts
Tap to expand
Loading advisories…
Summary
💵
$7/day
Per person entrance fee
📷
10 live
Camera
Historic Crowd Data
Avg. monthly visitors, 2015–2024 · National Park Service
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Light Moderate Busy Very Busy
Peak season is July–August, when around 63% of annual visitors arrive. For lighter crowds, aim for October–May.
Plan Your Visit
⚠️Remoteness & Water SafetySelf-reliance required
🌊 Isle Royale is one of the most remote parks in the system — emergency response and evacuation take time, and NPS is direct that visitors must "rely on your own skills and equipment." Cell phone service is unreliable island-wide; don't depend on it. Lake Superior's waters are unpredictable and can turn dangerous quickly for boaters and paddlers — check conditions before any water crossing. Come prepared for any weather, and treat all lake water before drinking (swimmer's itch is also a concern in some bays). NPS safety info ↗
🚤Ferry & Seaplane AccessMultiple operators
From Houghton, MINPS ferry
Ranger III
The park's own ferry, roughly a 6-hour crossing to Rock Harbor. Schedule released each late winter/early spring.
From Grand Portage, MNConcessioner
Voyageur II & Sea Hunter III
Faster crossings to Windigo or Rock Harbor; camper one-way fares run roughly $100–$120/adult in 2026 (varies by route and trip type).
✈️ Isle Royale Seaplanes also offers direct flights from Houghton — the fastest option, roughly 35 minutes each way, weather permitting. Full ferry/seaplane details ↗
Fees
Daily entrance$7/person
Season pass (covers 4)$60
Age 15 & underFree
Cashless park — cards only
🐺Wolf-Moose StudyLongest-running in the world
🫎 Isle Royale's isolated wolf and moose populations have been tracked continuously since 1958 — the longest-running study of a predator-prey relationship anywhere in the world. Moose sightings are common across the island; give them wide berth, especially cows with calves. NPS wolf-moose study ↗
🏕CampingBackcountry permit
🎒 No vehicles are permitted on Isle Royale at all, so there's no drive-up camping — every site is backcountry, reached on foot or by boat, with three-sided shelters and tent pads scattered along the island's trail network. A free backcountry permit (filled out at the dock on arrival) is required for every overnight stay. Full camping details on NPS.gov ↗
🥾Things to Do5 categories
Hiking Trails4 trails
Stoll Trail — Scoville PointEasy–Mod.
Figure-eight day hike from Rock Harbor past old mine sites to the rocky tip of Scoville Point; wooded on the Tobin Harbor side, rocky and exposed on the Rock Harbor side
1.9–4.2 mi loop
Greenstone Ridge Trail40+ mi one-way · Multi-day
The island's backbone route along its highest ridge, running from Windigo to Lookout Louise
Feldtmann Loop30+ mi loop · Multi-day
Loop through the island's southwestern end past Feldtmann Lake and Rainbow Cove
Minong Ridge TrailStrenuous
The island's most challenging route — bare ridge walking, steep climbs/descents, and changing trail conditions
30+ mi
Paddling2 ways
Inland Lake CanoeingPermit for overnight stays
Calmer paddling on the island's interior lakes, linked in places by portage trails
Lake Superior KayakingExperienced paddlers only
Open-water paddling requires ACA Level 3 certification (or equivalent) and a sea kayak 15+ ft with sealed bulkheads; 1–3+ ft waves and fog are common
Scuba Diving2 things to know
Shipwreck DivingRegister at Rock Harbor/Windigo/Houghton
One of the best-preserved shipwreck collections in the National Park System, spanning 70 years of Lake Superior shipping — including the SS Kamloops, SS America & SS Congdon
Cold-Water ConditionsDrysuit recommended
Surface temps rarely top 55°F, dropping to 34–37°F below 50 ft; full wetsuit required, drysuit recommended
Fishing2 ways
Lake Superior FishingLicense required
Bays, harbors & open water; Michigan fishing license required (anglers 17 and under exempt)
Interior Lakes FishingNo license needed
No license needed; barbless hooks and artificial lures only, live/preserved bait prohibited. Brook trout and lake herring/whitefish are catch-and-release only
Bird WatchingTop 5 species
Common Loon
Common Loon
Haunting call across the island's lakes
Bald Eagle
Bald Eagle
Nests along the Lake Superior shoreline
Osprey
Osprey
Fishes the interior lakes
Common Raven
Common Raven
Year-round island resident
Herring Gull
Herring Gull
Common along the rocky shore
Refreshing in 60s
📞 Phone: (906) 482-0984  ·  Mailing Address: 800 East Lakeshore Drive, Houghton, MI 49931  ·  Official NPS contact page ↗
Copyright ParkGauge.com 2026