Island Park is a one-of-a-kind destination tucked into the eastern Idaho mountains, stretching 33 miles along a single main road that earned it the title of the longest main street in America. Surrounded by the Caribou-Targhee National Forest and just minutes from the west entrance to Yellowstone National Park, it's a basecamp for year-round adventure — fly fishing on the Henry's Fork, snowmobiling hundreds of miles of groomed trails, hiking through alpine meadows, or simply unwinding lakeside at Henrys Lake or Island Park Reservoir. Whether you're planning a family vacation, a fishing trip with friends, or a quiet retreat in the pines, Island Park has a way of bringing people back season after season.
