Provo to Spearfish: A High-Plains Road Trip Guide

The drive from Provo, UT to Spearfish, SD spans 784 miles along I-80, I-25, and I-90, with the route crossing the Continental Divide at 7,080 feet near Rawlins, WY. This is the shortest paved path between the two cities, passing through the high desert of southern Wyoming before climbing into the Black Hills.

Drivers will traverse three states and transition from the Wasatch Range's alpine lakes to the iconic granite spires of the Black Hills, with about 22% of the route running through areas designated as Greater Yellowstone Ecosystem, though it stays well north of the park itself.

Driving conditions are generally safe, but the Wyoming sections are notorious for sudden crosswinds, especially on I-80 between Rawlins and Laramie. The most dangerous section is the 30-mile stretch west of Rawlins called the 'wind tunnel,' where gusts can exceed 50 mph.

To manage fatigue, plan stops every 2-3 hours. Rest areas are plentiful, with the one at Veedawoo (mile marker 323) offering picnic tables and scenic views. For longer breaks, Buffalo, WY, at the junction of I-25 and I-90, serves as an ideal halfway point with a selection of motels and RV parks.

For a guide to finding unique roadside attractions, see how to find the best stops and hidden gems between cities. This Trip is worth driving for the Black Hills alone, but the journey itself is filled with natural wonders and Western history.

The route offers a striking transition from the Wasatch Range's pine forests to the barren, red-rock badlands of Wyoming, then into the lush, ponderosa pine-covered Black Hills. One of the most bio-diverse stretches is through the Shirley Basin, a sagebrush steppe that is a key habitat for the state's pronghorn antelope population.

Along the way, travelers will pass near two UNESCO World Heritage Sites: Yellowstone National Park (300 miles north of the route) and Mesa Verde National Park (400 miles south). Both are worthy detours if time allows, but they are not directly on the interstate.

Culinary infrastructure is robust, with local diners and truck stops serving everything from buffalo burgers to cowboy steaks. In Laramie, the historic Buckhorn Bar & Cafe has been a local institution since 1890, but rather than a single stop, consider planning meals around smaller towns like Walcott Junction, known for its family-run cafes offering regional fare such as Rocky Mountain oysters.

Hidden off-route gems include Vedauwoo Recreation Area near Laramie (exit 323), a granite rock formation perfect for quick photography, and the Terry Bison Ranch in Terry, MT (just off I-90), which offers a bison herd tour and a short trail ride.

Fuel costs for this trip average $95 for a standard sedan, based on $3.20 per gallon. Wyoming's 2% statewide fuel tax is among the lowest in the country, making refueling economical at stations in Evanston, Rawlins, and Buffalo.

This route is a primary east-west freight corridor, so road maintenance is frequent, and asphalt conditions are generally good throughout. However, severe winter weather can close sections of I-80 between Laramie and Rawlins due to high winds and drifting snow, so check forecasts before departing.

For families, the journey is comfortable for children accustomed to long drives, with restrooms at every fuel stop and many rest areas featuring play areas. Pets are welcome at most rest stops and hotels, though leash laws are strictly enforced in national forests and state parks.

• Use the WYDOT 511 mobile app for real-time road closures and conditions.
• Cell coverage is spotty in remote areas; download offline maps for Wyoming.
• Speed limits are 75 mph on most interstates, but drop to 65 mph in construction zones.