Island Park to Jackpot: Geothermal Gems & Desert Stops

This route passes through a geologically unique region where the Yellowstone hotspot has shaped the landscape for millions of years. You'll drive from the forested highlands of Island Park (elevation 6,300 feet) down to the sagebrush steppes of the Snake River Plain, ending in the border town of Jackpot, Nevada (elevation 5,300 feet). The total distance is roughly 260 miles, and you'll cross the Continental Divide at an elevation of 7,000 feet near the Idaho-Montana border, though you stay in Idaho for most of the journey.

Along the way, you'll pass through the Caribou-Targhee National Forest, the site of the 1959 Hebgen Lake earthquake, and the Craters of the Moon National Monument. The drive offers a stark contrast between volcanic terrain and river valleys, and it's a popular route for travelers heading to Nevada's casino country or connecting to the broader western US.

The road is generally in good condition, but be alert for wildlife, especially deer and elk, particularly at dawn and dusk. In winter, snow and ice are common, so check weather forecasts and carry chains if you're traveling off-season. Summer thunderstorms can bring sudden downpours, and the high desert is prone to flash floods, so be cautious in low-lying areas. Emergency services are limited between Arco and Jackpot; the nearest hospitals are in Idaho Falls and Twin Falls, so drive with a well-stocked emergency kit.

For families, several stops cater to kids. The Idaho Falls River Walk is a easy, stroller-friendly path along the Snake River with playgrounds and picnic areas. The Craters of the Moon has a Junior Ranger program, and the lava tubes offer safe, exciting exploration (bring flashlights). The Experimental Breeder Reactor I in Arco is a National Historic Landmark that offers free guided tours, including a chance to see a control room that shows how nuclear energy was first used to power a light bulb in 1955.

Pets are welcomed at many outdoor stops, including Craters of the Moon (on leash) and the Mesa Falls overlooks. But remember that summer temperatures can exceed 90°F in the lava fields, so avoid leaving pets in parked cars and carry plenty of water. In Idaho Falls, the River Walk has pet waste stations, and several restaurants have outdoor patios that allow dogs.

To combat fatigue, plan rest stops every two hours. There are pull-offs with scenic views at the Thomas Fork Canyon, and a rest area east of Arco. The community of Carey has a small park and a gas station where you can stretch. If you need a longer break, the Craters of the Moon campground has restrooms and drinking water, even if you're not staying overnight.

Most of the drive is on US-20, US-26, and US-93, which are well-maintained two-lane highways. Expect to spend about 4 hours and 10 minutes of pure driving time, but factor in stops. The best stops between Island Park, ID and Jackpot, NV include the Idaho Falls River Walk, the Experimental Breeder Reactor I in Arco, and the Craters of the Moon visitor center. If you're asking 'is it worth driving Island Park, ID to Jackpot, NV,' the answer is yes—especially for geology enthusiasts and those who enjoy wide-open spaces.

Fuel is available in Island Park, Idaho Falls, Arco, Carey, and Jackpot, but distances between stations can be 60 miles or more, particularly between Arco and Jackpot. Plan to fill up in Arco if you're low. Gas prices tend to be slightly higher in rural areas, so budgeting around $60 for a typical sedan is reasonable. For electric vehicles, charging stations are sparse; the only fast charger on the route is in Idaho Falls, so plan accordingly. Cell service is intermittent, especially between Arco and Jackpot, so download offline maps.

For camping, there are numerous National Forest campgrounds near Island Park and along the route, such as the Cave Falls Campground in the Targhee National Forest. In Idaho Falls, options include the Snake River RV Park and the Idaho Falls KOA. In Jackpot, the Cactus Pete's Resort and the Horseshu Hotel and Casino offer hotel rooms, and there are RV spots at the casino parking lots. For dining, Idaho Falls has a wide range of chains and local eateries, while Arco has a few diners like the Arco Smokehouse. Jackpot is known for its buffets and 24-hour coffee shops.

To find more information on planning stops, see how to find the best stops and hidden gems between cities.

The route showcases two dramatically different volcanic landscapes. The first is the Yellowstone Plateau, with its geyser basins and rhyolite lava flows, visible around Island Park. The second is the younger basalt flows of the Snake River Plain, best seen at the Craters of the Moon National Monument and Preserve. This UNESCO World Heritage Site candidate (though not yet listed) features more than 60 lava flows and 25 cinder cones, some formed as recently as 2,000 years ago. The park's visitor center offers interpretive exhibits, and the 7-mile loop road allows for a quick tour.

Other natural attractions along the route include the Mesa Falls Scenic Byway, a 28-mile detour from Ashton that features the 114-foot Upper Mesa Falls. The Caribou-Targhee National Forest offers ample hiking and wildlife viewing, with elk and moose frequently seen. In the fall, the aspen trees turn golden, creating a striking contrast against the dark lava rocks.

Local commerce along the route is largely tied to agriculture and tourism. In Idaho Falls, the riverfront district boasts a weekly farmers market from May to October, offering local produce and crafts. The town of Arco is home to the 'Gateway to Craters of the Moon' and has a small downtown with a grocery store and a few shops. Jackpot, Nevada, is a classic border town built around casinos, which are the primary economic driver. The town also has a golf course and an RV park, catering to travelers.

For a taste of local culture, stop at the Idaho Falls Zoo, which cares for over 300 animals, or the Museum of Idaho, which features rotating exhibits on natural history. In Arco, you can visit the Craters of the Moon Natural History Association bookstore, which offers books on geology and local history.