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Entrance
$7
No permit needed
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⭐ Highlights
→Wolf and moose relationship — longest predator-prey study in world
→Greenstone Ridge Trail — 40 mi backbone of the island
→Rock Harbor Lodge — only in-park lodging
→Shipwreck diving in Lake Superior
⚠ Before you go
!Accessible only by ferry or floatplane — no roads on island
!Park closed November through April
!Moose encounters common — give wide berth
When to visit
Isle Royale by Season
May–June
Opening. Some facilities limited.
July–Aug
Peak. All services operating.
September
Best weather. Fewer visitors.
Oct–Apr
Park closed.