Greenstone Ridge Trail Isle Royale Traverse

A long spine of ancient volcanic rock runs across Isle Royale, carrying backpackers through quiet boreal forest, rocky overlooks and a landscape shaped by Lake Superior. The Greenstone Ridge Trail is an immersive wilderness traverse where loons, moose and sweeping water views define the days.

Far from roads and towns, the experience is about deliberate travel: filtering water, carrying food, reading the weather and reaching remote campgrounds by foot. Each day reveals a different combination of ridgeline, wetland and island solitude.

ONCE YOU’RE THERE

Start at the Rock Harbor arrival dock, obtain required backcountry information and follow NPS-marked connecting trails to the Greenstone Ridge route. Plan campsites and your Windigo exit before departure.

LOCAL INTEL

A full traverse is roughly 43 miles. Ferry schedules and campsite capacity determine the realistic itinerary; allow several days and buffer for weather.

TRAIL CONDITIONS & SAFETY

This is remote backpacking with changing weather, insects, uneven footing and no quick rescue access. Treat drinking water and follow strict food-storage rules.

FEES & ACCESS

Isle Royale National Park entrance fees and ferry/seaplane transportation costs apply; camping rules and permits depend on party size and itinerary.

BEFORE YOU GO

Check current land-manager alerts, weather, and access rules before departure.