Things to Do in
Island Park, Idaho

The single most popular activity in Island Park — and the reason many families extend their Yellowstone trip by a day — is a guided backcountry ATV tour. Unlike self-drive ATV rentals where you navigate unfamiliar trails alone and assume full liability for a $30,000 machine, passenger-only ATV tours let you sit back while a certified guide drives. That makes the experience accessible to everyone: kids as young as five, grandparents, couples who've never been off-road, and families who want adventure without the stress of driving.

Nomad Yellowstone operates daily guided ATV tours from May 15 through October 31, departing from Island Park. Routes access high-elevation ridgelines in the Caribou-Targhee National Forest, reaching viewpoints above 8,500 feet with panoramic views of the Teton Range and Yellowstone caldera. Tours last 2–4 hours and start at $179 per seat. Dust goggles, neck gaiters, and safety harnesses are included.

Island Park sits in the heart of the Greater Yellowstone Ecosystem, one of the largest intact temperate ecosystems in the world. The area supports healthy populations of elk, mule deer, moose, black bears, grizzly bears, wolves, sandhill cranes, osprey, and bald eagles. Wildlife viewing in Island Park often rivals what visitors find inside the park itself — with a fraction of the crowds.

The best viewing windows are early morning (before 8 AM) and the two hours before sunset. The Harriman State Park corridor along the Henry's Fork is a reliable elk and moose viewing area. Backcountry ATV tours with Nomad Yellowstone offer a unique advantage: guides know the seasonal migration patterns and routinely spot wildlife along ridgeline routes that are inaccessible by car. Many guests report seeing animals on their ATV tour that they never spotted inside Yellowstone.

The Caribou-Targhee National Forest surrounding Island Park contains hundreds of miles of designated OHV trails ranging from beginner-friendly forest roads to technical ridgeline routes above treeline. The most scenic trails run east from Island Park toward the Continental Divide, climbing through lodgepole pine corridors into alpine meadows with wildflower displays from late June through August.

Popular trail systems include the Sawtelle Peak area (panoramic Teton and Henry's Lake views), routes along the Continental Divide with 50-mile sightlines, and forest roads that wind through prime wildlife habitat. If you're not comfortable navigating backcountry trails on your own, guided passenger-only ATV tours offer access to the best routes without any driving experience required. Nomad Yellowstone's guides know every unmarked junction and seasonal closure.

Island Park is surrounded by public land with excellent camping options ranging from developed campgrounds with hookups to dispersed backcountry sites in the national forest. The area is far less competitive for campsites than the West Yellowstone side, especially for last-minute travelers during peak July and August weekends.

Popular campgrounds include those along the Henry's Fork corridor and near Henry's Lake. Many offer direct trail access for hiking and fishing. RV travelers will find full-hookup options at several private campgrounds in the Island Park corridor. For a more immersive experience, dispersed camping on national forest land is free and abundant — just follow Leave No Trace principles. Pair a camping trip with a guided ATV tour to maximize your backcountry time.

Island Park is a world-class fly fishing destination. The Henry's Fork of the Snake River flows directly through the area and is widely considered one of the finest trout streams in North America. Technical dry-fly anglers travel from around the world to fish the Railroad Ranch stretch in Harriman State Park, where large rainbow and cutthroat trout rise to complex hatches in glassy, spring-fed water.

Henry's Lake, just north of Island Park, offers a completely different experience: trophy-sized hybrid cutthroat-rainbow trout in a stunning mountain lake setting. Float tubes and small boats are popular. The lake typically opens in late May and fishes well through September. Whether you're a seasoned fly angler or a family looking for accessible shoreline fishing, Island Park has water to match your skill level. Local fly shops offer guided trips, gear rental, and daily hatch reports.

The Mesa Falls Scenic Byway is a 28-mile loop off US-20 that passes through some of the most dramatic volcanic scenery in Idaho. The highlight is Upper and Lower Mesa Falls — two powerful waterfalls on the Henry's Fork that remain relatively uncrowded compared to waterfalls inside Yellowstone. Lower Mesa Falls drops 65 feet through a narrow basalt canyon; Upper Mesa Falls is even more impressive at 114 feet.

The byway is paved and suitable for all vehicles, with several pullouts and interpretive signs. Allow 1.5 to 2 hours for the full loop with photo stops. Early morning offers the best light and fewer visitors. The drive pairs perfectly with a morning ATV tour — do the backcountry in the morning and the scenic byway in the afternoon. Other notable drives from Island Park include the route to Henry's Lake (15 minutes north) and the drive through Ashton to Driggs with Teton views.

Island Park's proximity to the West Yellowstone entrance makes it an ideal base for day trips into the park. The west entrance is roughly 20 minutes north via US-20, putting you at the Madison Junction within 45 minutes of leaving your cabin. From there, you can reach Old Faithful (30 minutes), the Grand Prismatic Spring overlook (20 minutes), or the Grand Canyon of the Yellowstone (1 hour).

The key advantage of basing in Island Park is avoiding the West Yellowstone morning traffic. Most park visitors depart from West Yellowstone between 8 and 10 AM, creating significant entrance gate delays. Leaving from Island Park at 7 AM — or better yet, spending the morning on a backcountry ATV tour and entering the park after 2 PM when crowds thin — gives you a dramatically better experience.

Island Park's outdoor season runs from mid-May through October, with each month offering a distinct experience. May and early June bring green-up, wildflower beginnings, and newborn wildlife — but trails at higher elevations may still have snow. July and August are peak season: warm days (65–80°F), long daylight, and the widest selection of activities. September is arguably the best-kept secret — golden aspens, bugling elk, almost no crowds, and comfortable temperatures. October offers the last window before winter, with dramatic fall color and excellent wildlife viewing as animals prepare for winter.

Nomad Yellowstone runs guided ATV tours from May 15 through October 31. Shoulder-season tours (May, September, October) often deliver the most memorable wildlife encounters and the most dramatic light for photography.

Island Park is exceptionally family-friendly. The pace is slower than West Yellowstone, the crowds are smaller, and many of the best activities are naturally suited to multi-generational groups. Big Springs — one of the largest natural springs in the US — features an easy one-mile boardwalk loop where kids can watch enormous trout in crystal-clear water. Mesa Falls has paved overlook trails suitable for strollers.

For adventure-seeking families, guided passenger-only ATV tours are the standout activity. Because professional guides do all the driving, kids as young as five can ride safely in full safety harnesses while the family explores backcountry terrain that would otherwise be inaccessible. It's consistently rated the highlight of family Yellowstone trips. Fishing, wildlife spotting from the car, and evening campfire programs at nearby campgrounds round out a full family itinerary.

Afternoon thunderstorms are common in Island Park during July and August — typically brief but intense. If you get a full rainy day, the good news is that Nomad Yellowstone's ATV tours run rain or shine (the Can-Am Commander Max XT vehicles have hard tops and weather protection). A rainy-day ATV tour through misty backcountry ridgelines is actually one of the most atmospheric experiences available.

Beyond ATV tours, rainy-day options include visiting the Yellowstone Historic Center Museum in nearby West Yellowstone, browsing fly shops and outfitters, soaking at natural hot springs (Lava Hot Springs is a longer drive but worth it), or simply enjoying the quiet of a cabin with a book. The rain usually clears by evening, often producing spectacular sunset light.