Price to Keystone: Utah to South Dakota Road Trip Guide

The drive from Price, Utah to Keystone, South Dakota spans 750 miles via US-191 and I-80, crossing the Green River, the Rocky Mountains, and the High Plains. At over 6,000 feet elevation near the Continental Divide, you'll encounter dramatic climate shifts.

Expect a minimum drive time of 11 hours without stops, but the journey offers a wealth of natural and cultural attractions. This guide covers everything from fuel costs to family-friendly stops, ensuring a safe and memorable trip.

Curious about how to uncover more hidden gems along the way? Learn how to find the best stops and hidden gems between cities.

The route passes through red-rock canyons near Price, the desert basins of Wyoming, and the Black Hills pine forests. Dinosaur National Monument is a notable detour off US-40, but you can also visit the Western Wyoming Community College Natural History Museum in Rock Springs (free admission).

• Flaming Gorge National Recreation Area – scenic drive, fishing.
• Independence Rock State Historic Site – pioneer landmark.

Local commerce thrives in small towns like Green River, WY, known for the annual Flaming Gorge Days celebration. In Keystone, you'll find shops and cafes catering to Mount Rushmore visitors, but local ranching culture remains evident in surrounding areas.

Winter driving requires chains in Wyoming; summer brings thunderstorms and hail. The route is generally safe, but watch for wildlife (deer, elk) at dawn and dusk.

• Best stops for families: Dinosaur National Monument (junior ranger program), Wall Drug (SD) for kitschy fun, and Reptile Gardens near Rapid City.
• Pet-friendly: Many rest areas have fenced dog parks; motels in Rawlins and Buffalo accept pets.

Fatigue management: Observe mandatory 10-hour breaks in commercial zones. Rest stops every 2 hours are advised. The scenic byway through the Black Hills offers pullouts for photos and stretching.

Hidden off-route spots: The town of Lusk, WY, has a free museum with a giant jackalope statue, a quirky photo op.

Major highways include US-191 north to I-80 east, then I-90 east to US-16 south. Road quality is generally good, with Wyoming's I-80 known for high winds and snow in winter. Check weather before departure.

• Fuel stops: Rawlins, WY (approx. 250 mi), Buffalo, WY (approx. 300 mi), and Rapid City, SD (approx. 350 mi).
• Average gas cost: $120–$150 for a sedan, depending on prices.
• No tolls on this route.

Cell coverage is spotty in rural areas, so download offline maps. Rest areas every 50–100 miles on interstates offer restrooms and picnic tables.