Island Park to Kemmerer: Scenic Drive Guide

The route from Island Park, ID to Kemmerer, WY spans roughly 200 miles along US-20 and US-30, crossing the Continental Divide at an elevation of 7,084 feet near Teton Pass. This drive typically takes 3.5 to 4 hours without stops, but the diverse landscapes—from volcanic plains to high desert—make it a journey worth savoring.

Along the way, you'll pass through historic railroad towns, geothermal features, and the western edge of the Greater Yellowstone Ecosystem. The region's geology tells a story of ancient volcanic eruptions and glacial carving, evident in the Snake River plain and the Caribou-Targhee National Forest.

The landscape transitions from the pine forests and volcanic caldera of Island Park to the sagebrush steppe of the Snake River plain. Just south of Idaho Falls, you'll spot the Idaho National Laboratory, a vast nuclear research facility that has been operational since 1949.

Further east, the Caribou-Targhee National Forest offers opportunities for hiking and wildlife viewing, including pronghorn and moose.

Local commerce thrives in small towns like Soda Springs, which is famous for its carbonated water springs and the Hooper Spring Gazebo, listed on the National Register of Historic Places. The town also hosts an annual Soda Springs Winter Carnival in February.

For a taste of local culture, stop at the Lava Hot Springs, a natural hot spring resort that has been a tourist destination since the early 1900s.

Regarding UNESCO World Heritage Sites, while this route doesn't include any, the nearby Yellowstone National Park (a UNESCO site) is accessible via a detour from Island Park. You can find how to find the best stops and hidden gems between cities to uncover more off-the-beaten-path spots.

The route is generally safe, but watch for wildlife, especially at dawn and dusk. Most roads have good signage and reflectors. Winter travel requires caution; snow and ice are common from November to March.

Families will find numerous kid-friendly stops, including the Idaho Falls Zoo (Tautphaus Park Zoo) and the Museum of Clean in Pocatello, which has interactive exhibits.

Pet owners will appreciate the many rest areas with designated pet walks, such as the one near Blackfoot. Ensure pets are leashed and never left alone in vehicles, as temperatures can rise quickly.

For fatigue management, plan breaks every 2 hours. Recommended rest stops include the Fort Hall Replica in Pocatello and the Bear Lake Overlook, 15 miles off the route.

For those needing a longer break, consider the best stops Island Park, ID to Kemmerer, WY include the Caribou County Museum in Soda Springs, and the Fossil Butte National Monument, a hidden gem just off US-30 that showcases ancient fish fossils.

US-20 from Island Park to Idaho Falls is a well-maintained two-lane highway, followed by a four-lane section to Pocatello. US-30 then winds through the Portneuf Valley and into Wyoming, with a few mountain passes. Cell service is intermittent, especially between Soda Springs and Kemmerer, so download offline maps.

• Gas stations are available in Ashton, St. Anthony, Idaho Falls, Pocatello, Soda Springs, and Kemmerer. Fuel prices tend to be higher in small towns.
• The entire route is paved, and no special permits are required for standard vehicles.
• Road conditions can be monitored via Idaho 511 and Wyoming 511 websites.

For those wondering how long to drive Island Park, ID to Kemmerer, WY, the answer is about 3.5 hours of pure driving, but plan for extra time if you stop at attractions. The drive is is it worth driving Island Park, ID to Kemmerer, WY? Absolutely, for the varied scenery and hidden gems along the way.