Gardiner to Alliance Road Trip Guide: 12 Best Stops

Leaving Gardiner, Montana, the northern gateway to Yellowstone National Park, you are at the foot of the Beartooth Mountains. Your destination is Alliance, Nebraska, home to Carhenge, a quirky replica of Stonehenge made from vintage cars. This route spans more than 600 miles across Montana, Wyoming, and South Dakota before reaching Nebraska's plains.

The first mile marker on US-89 South is your starting point, and the road soon joins US-191 South through the Gallatin National Forest. In winter, expect heavy snowfall; summer brings clear skies and temperatures above 80°F. Driving time without stops is roughly 10 hours, but you'll want at least a weekend to explore.

The route swings east on I-90 across southern Montana, then drops south on I-25 through Wyoming, and finally cuts across the Nebraska Panhandle on US-385. You'll pass through the Powder River Basin, a major coal-producing area, and witness the transition from mountain forests to high desert and finally to grasslands.

One of the best sights early on is the Pompeys Pillar National Monument, just off I-90 near Billings—a sandstone butte with the only remaining physical evidence of the Lewis and Clark expedition. Plan your fuel stops; remote stretches between towns can exceed 70 miles, so fill up when you see a station.

Driving this route is generally safe, but watch for wildlife (deer and cattle) on rural roads, especially at dawn and dusk. Keep a safe distance and be prepared for sudden braking. The roads are well-maintained, but in winter, black ice can form on shaded bridges.

For families, several stops combine education and fun. Little Bighorn Battlefield National Monument offers a moving history lesson for older kids. In Cody, Wyoming, the Buffalo Bill Center of the West, a collection of five museums, is a great rainy-day option (adds 2 hours detour). On the Nebraska side, the Carhenge site is a whimsical photo opportunity, and nearby, the Knight Museum features local history and a vintage car display.

A tired driver is a dangerous driver. Plan to stop every two hours at one of the rest areas. Notable rest areas include the Powder River Rest Area near Gillette and the Sandhills Rest Area near Alliance. Both have picnic tables and restrooms.

• In the summer, carry water and sunscreen; temperatures can exceed 100°F in the plains.
• For pets, most rest areas and national monuments allow leashed pets, but not inside buildings.
• In case of emergency, call 911; mobile coverage is spotty but exists in most towns.

Between major cities, you'll find small towns like Buffalo, WY, and Chadron, NE, which offer diners and quick fuel stops. The culinary infrastructure includes classic steakhouses in Billings and Sheridan, while Alliance has a few family-owned restaurants. For a unique snack, try the beef jerky at a Wyoming gas station.

Two underrated off-route spots are the Bighorn Canyon National Recreation Area near Lovell, WY, and the Fort Robinson State Park near Crawford, NE—both offer stunning scenery and history. They are a bit out of the way, but if you have extra time, they are worth the detour.

Leaving Gardiner, you follow the Yellowstone River through Paradise Valley, with the Absaroka Range to your east. The scenery shifts from thick pine forests to rolling ranchlands as you approach Livingston. In Livingston, stop at the Yellowstone Gateway Museum to learn about the area's railroad history.

Farther east, Billings is Montana's largest city, offering a range of dining options and local breweries like Thirsty Street Brewing Co. and Uberbrew. Just north of Billings, the Pictograph Cave State Park preserves ancient rock art and offers short trails. As you continue on I-90, the landscape opens into the Powder River Basin, a high desert with sagebrush and coal mines.

In Sheridan, Wyoming, the King's Saddlery and Don King Museum showcases Western craftsmanship. From Sheridan, follow US-14 east through the Bighorn Mountains—this detour adds 2 hours but rewards you with the spectacular Bighorn Scenic Byway. The route reconnects to I-90 near Gillette, a hub for coal and energy industries.

Approaching South Dakota, the landscape becomes more rugged with occasional buttes. The town of Newcastle offers a brief glimpse into the region's oil and gas boom. Entering Nebraska, the terrain flattens into the Sandhills, a unique grass-stabilized dune region. Near Alliance, you'll find the iconic Carhenge, a 1987 installation by Jim Reinders.

For local produce, visit the farmers' markets in Billings (Saturdays) and Alliance (Fridays). The region is also known for its beef, but vegetarian options are available in larger towns.

Asking 'how long to drive Gardiner, MT to Alliance, NE'? The non-stop drive is about 10 hours covering 620 miles. However, road conditions and weather can add time, especially in winter. Major highways—I-90, I-25, and US-385—are well-maintained with rest areas every 50 to 80 miles.

The best fuel prices are typically in towns along I-90, such as Big Timber and Sheridan, where competition keeps prices lower than in remote areas. As of 2025, expect to pay around $3.50 per gallon in Montana and slightly less in Nebraska. A mid-size car with 30 mpg will need about 21 gallons for the trip, totaling roughly $70 in fuel.

• Consider a National Parks pass if you plan to visit Little Bighorn Battlefield (entrance fee applies).
• Cell service is sparse in the mountain passes; download offline maps via how to find the best stops and hidden gems between cities.
• In winter, check road conditions via Wyoming 511 and Montana 511 before departure.
• Speed limits: 75 mph on I-90, 70 mph on I-25, and 65 mph on US-385.

For electric vehicles, charging stations are sparse; plan for overnight charging in Billings or Sheridan if needed. The route passes through the Central Time Zone after entering South Dakota, so adjust your clock accordingly. If you're wondering 'is it worth driving Gardiner, MT to Alliance, NE', the diverse landscapes and historic sites make it a worthwhile journey.

Alliance itself is small (pop. 8,500), but it offers basic amenities. For the return trip, consider an alternate route via US-26 and US-20 for variety.