Raspberry Island Boardwalk

Overview

This short, scenic loop delivers a bite-size taste of Isle Royale’s variety: boreal forest, a fragile bog, and wave-washed rock along Lake Superior—all in about 1.0 mile total. It’s an easy outing on paper, but the tread is natural and uneven, and the boardwalks are narrow, so expect a slower, look-around pace rather than a fitness march.

What You’ll See

You’ll thread through spruce–fir forest before stepping onto skinny boardwalks that float you over a wetland community famous for insectivorous plants—keep an eye out for delicate sundews and the unmistakable pitchers of pitcher plants. Along the lakeshore, you’ll get rugged Lake Superior vibes: lichen-crusted basalt, wind, and big water views. Interpretive signs along the way connect the dots on the island’s geology and ecology, making this a great primer if you’ve just arrived in Rock Harbor.

Trail Character

The path and boardwalks are roughly 18 inches wide. Surfaces are unpaved with rocks and roots, and the boardwalks can be wet and slippery after rain. While the loop is short with minimal elevation change, there are short ups and downs and uneven footing—more “careful stroll” than casual sidewalk.

Access & Logistics

The trail starts at Raspberry Island Dock and is only reachable by water from Rock Harbor. Options include the lodge tour boat when operating, a rental or private craft, or a paddle—just remember that open water here is exposed to wind and waves. Nearest amenities are back in Rock Harbor at the lodge and marina. No special hiking permit is needed for a day visit, but you’ll need to handle park entry and transportation.

Best Time to Hike

Late spring through early fall is the sweet spot. The bog feels most alive in late spring and early summer when its carnivorous plants are at their showiest. After rain, expect slick boardwalks. Weather can swing cool and rainy any time—pack layers and a shell. If a tour boat is running, expect short bursts of visitors around landings; otherwise, it’s often quiet.

Tips & Safety

Wear shoes with good traction; waterproof is a plus. Tread lightly on the boardwalks and give way thoughtfully—they’re tight to pass on. If you’re boating or paddling over, check wind and wave forecasts before committing. Pets aren’t allowed, and the boardwalk is too narrow for strollers or mobility devices.