Midway to Island Park: Scenic Drive Guide & Best Stops

Midway, Utah sits at the foot of the Wasatch Mountains, a historic resort town with a Swiss heritage flowing from its hot springs. The drive to Island Park, Idaho, roughly 280 miles, passes through the heart of the Rocky Mountains, crossing the Utah-Idaho border and ending near the caldera of an ancient supervolcano.

U.S. Route 189 is the main artery from Provo to Jackson, but the most direct road trip from Midway follows US-40 east to US-191 north, then merges onto US-189 in Wyoming before heading northwest. Expect 5.5 to 6.5 hours of driving time, depending on stops and traffic.

For families, the drive includes several kid-friendly attractions. The Dinosaur National Monument near Vernal has a fossil wall you can touch. At Fossil Butte, kids can pan for fossils. The Island Park Reservoir has picnic areas with swimming.

Pets: Most national forests allow dogs on leash. The hiking trails in the Uintas are dog-friendly. Rest areas along the highways provide essential stretching spots, but few have fenced dog parks—keep pets leashed.

Fatigue management: Plan rest breaks every 2 hours. Notable rest stops: Duchesne City Park, Manila's boat ramp, and the Wyoming Welcome Center near Evanston (on I-80). For a short hike to stretch legs, the Kermitsville Trail near Montpelier is serene.

Hidden gems: The Midway Ice Castles (winter) are a magical cave-like experience, while the Cascade Springs on the Alpine Loop offer accessible boardwalk. In Island Park, the Mesa Falls Scenic Byway leads to multiple waterfalls, including Lower Mesa Falls, a grand 65-foot cascade less crowded than Upper Mesa Falls.

The route crosses the Uinta Mountains, home to Utah's highest peaks, including Kings Peak (13,528 ft). The Uinta and Wasatch-Cache National Forests offer countless hiking opportunities. On the Idaho side, you enter the Island Park Caldera, site of one of Earth's largest volcanic eruptions 2.1 million years ago. The caldera's rim forms the Island Park Plateau, dotted with geothermal features.

In Kemmerer, Wyoming, visit the Fossil Butte National Monument—a UNESCO World Heritage Site known for its 50-million-year-old fish fossils. The visitor center is open daily. For a taste of local culture, stop at the Heber Valley Historic Railroad in Heber City, offering scenic steam train rides.

Climate: The Uinta region sees summer highs in the 70s°F, with afternoon thunderstorms common. Island Park is cooler, with summer highs around 70°F. Autumn brings gold aspen leaves along the byways. Winters are cold and snowy; many amenities close after Labor Day.

When planning your drive, check road conditions in advance. Wyoming's Interstate 80 can close due to winter storms, and US-191 in Wyoming may have construction. Mountain passes like Daniel Summit (elev. 8,000 ft) can be snowy from October to May.

• Fuel stops: Heber City (UT), Duchesne, Vernal, Manila (UT), and Montpelier (ID) offer gas. In Wyoming, the gap between Vernal and Kemmerer is 70 miles—fill up in Vernal.
• Food options are sparse between Duchesne and Marquette (WY); carry water and snacks. Montpelier has several family restaurants.
• Cell service: Expect dead zones in the Uinta and Bridger-Teton national forests. Download offline maps.

Road quality is generally good, but watch for wildlife on US-191. Deer and elk frequently cross at dawn and dusk. Speed limits drop to 45 mph through small towns; be prepared for slow-moving farm vehicles.

If you want to find more hidden gems en route, check out how to find the best stops and hidden gems between cities for trip-planning tips.