Pierre to Alpine: An Epic Road Trip Guide

The drive from Pierre, the capital of South Dakota, to Alpine in western Wyoming covers about 600 miles of dramatic transitions. It starts on the Missouri River bluffs and climbs into the Black Hills, then swings through the high plains and the Bighorn Basin before the Rocky Mountains appear. Along the way, you'll cross the geographic center of the United States—a fact many travelers miss because the monument is easy to bypass.

This route takes roughly 9 to 10 hours of pure driving, depending on stops and weather. That makes it a solid two-day trip for most, though a marathon day is possible for the determined. If you're wondering is it worth driving Pierre, SD to Alpine, WY, the answer is a resounding yes—the scenery and hidden gems along the way are the real payoff.

Leaving Pierre, the landscape is rolling prairie, rich with pheasants and sunflowers. At Wall, the Badlands' striated rock formations appear to the south, and a short detour to Badlands National Park is a popular side trip, though it adds about an hour. The Black Hills around Rapid City offer granite peaks and the famous sculpture of Mount Rushmore, but that's a detour too.

In Wyoming, the Bighorn Basin is a high desert of sagebrush and oil fields, but as you climb toward the 9,000-foot Powder River Pass (US-14), the air cools and pine forests dominate. The pass itself offers sweeping views of the basin below. On the western side, the Medicine Wheel National Historic Landmark is a short drive south on Forest Service Road 12—a sacred Native American site that predates European contact.

For local commerce, stop in the small towns of Buffalo or Lovell, where you'll find family-run cafés like the Busy Bee Cafe in Buffalo, known for its buffalo burgers. In Lovell, the Big Horn County Museum provides a snapshot of pioneer life. Along I-90, Wall Drug remains a kitschy icon with free ice water and a T-rex—a fun photo op.

When planning things to do between Pierre, SD and Alpine, WY, consider a quick tour of the Crazy Horse Memorial, a mountain carving still in progress, or a hike in Wind Cave National Park. The route also passes near the Little Bighorn Battlefield in Montana, which is a short drive north from the interstate at Hardin—optional but rich in history.

For a deeper dive on discovering hidden gems, check this guide on how to find the best stops and hidden gems between cities.

The roads are generally in good condition, but watch for wildlife—especially deer and antelope—during dawn and dusk. In the Bighorn Mountains, sharp curves and steep grades demand caution, and in winter, snow and ice are common. The speed limit on I-90 is 80 mph in South Dakota and 75 in Wyoming, but slower in construction zones.

For families, the route offers numerous kid-friendly stops: the Badlands National Park's Fossil Exhibit Trail is a short, easy hike; in Wall, the Wall Drug has a life-size dinosaur and a cafe; and in Buffalo, the historic Occidental Hotel is an interesting stop. Rest areas on I-90 are clean and some have picnic tables, but they can be sparse in Wyoming.

To fight fatigue, take a break every two hours. Key rest stops include the rest area near Kadoka, South Dakota, and the one just east of Gillette, Wyoming. If you're traveling with pets, most rest areas have designated pet areas, but note that national parks like Badlands and Wind Cave are not fully pet-friendly on trails—check rules before hiking.

Your route primarily follows US-14 West from Pierre through Fort Pierre, then merges onto I-90 West near Wall. You'll stay on I-90 through Rapid City, Sundance, and into Wyoming, then exit onto US-14/16/20 through Greybull and over the Bighorn Mountains to reach Lovell and finally US-20/US-26 to Alpine. The total driving time is around 9–10 hours, but mountain weather can slow you down.

• Fuel stops are plentiful every 50-60 miles along I-90, but once you leave the interstate, stations thin out—plan to fill up in Gillette or Buffalo before crossing the Bighorns.
• As you approach Alpine, the road enters the Bridger-Teton National Forest; winter conditions can close passes, so check road alerts before setting out.
• Tolls: none on this route.