Isle Royale is one of the premier backpacking parks in the United States. For starters, it’s nearly impossible to get seriously lost. The island is roughly 45 miles long and 9 miles wide; unless you’re walking in circles, you can only go so far.
Greenstone Ridge, commonly referred to as “The Greenstone,” follows the spine of the island and is the most notable long-distance hiking trail at Isle Royale. There aren’t any campsites located directly on its 42-mile length, but several short spur trails lead to more secluded camping locations. It is reasonable to cover the entire length of the trail from Lookout Louise to Windigo in 3 days, camping at Chickenbone Lake and Lake Desor. However, plan a longer trip allowing more time to explore the many bays and lakes and to wait out bad weather (if needed).
Running parallel to The Greenstone is Minong Ridge Trail. It covers 26 miles of wild and rugged terrain, and is much more difficult to traverse than its well-maintained counterpart. The challenge, abundance of wildlife, and lack of hikers attract backpackers to Minong, but these adventurous souls are few and far between. You have a better chance of spotting moose than another hiker. Just don’t get lost while looking for wildlife; pay close attention to the cairns lining the barren ridgelines. Also, watch where you step because the terrain is rugged and the trail is undeveloped, lacking bridges and walkways that are integrated into most of Isle Royale’s other trails. Minong Trail is best hiked from east to west (McCargoe Cove to Windigo). Voyageur II makes scheduled stops at McCargoe Cove. You can also hike in or take a water-taxi.
You must stay at established campsites unless off-trail arrangements are made when you obtain your backcountry permit. Permits are required for all overnight stays at campgrounds, off-trail (only recommended for experienced backpackers) sites, docks, or at anchor, and can be obtained aboard the Ranger III or upon arrival at Rock Harbor or Windigo Visitor Centers.