Whitefish to Evanston Road Trip: Montana to Wyoming Guide

This route from Whitefish, MT to Evanston, WY follows US-93 south then I-90 east through Flathead Valley and the Rockies. Historically, the stretch between Missoula and Butte was part of the Mullan Road—the first wagon route over the Rockies, built in 1859 by John Mullan. Today, you'll cross the Continental Divide twice: once at Homestake Pass (elevation 6,329 ft) near Butte and again at Pipestone Pass (elevation 5,100 ft) on I-90 before Whitehall. The drive covers approximately 460 miles and takes 7 to 8 hours without stops.

The primary route is US-93 south from Whitefish to Missoula (120 miles, 2 hours), then I-90 east to Butte (120 miles, 1.5 hours), then I-15 south to Dillon (60 miles, 1 hour), and finally US-91 south to Evanston (160 miles, 2.5 hours).

• Total driving time: 7 hours without stops. With recommended stops, budget 10-12 hours.
• Best to start early to avoid afternoon thunderstorms in summer and ice in winter.
• Gas stations are sparse between Missoula and Butte (only in Deer Lodge) and again between Dillon and Evanston (only in Lima and Monida). Fill up in Missoula and Dillon.
• Cell service is patchy along US-91 in Idaho and Montana; download offline maps.

Fuel costs: As of 2025, gas prices average $3.50/gal in Montana, $3.70 in Idaho, $3.60 in Wyoming. A typical sedan (25 mpg) will cost about $64 for the drive. Diesel stations are available in all major towns but limited in between.

The drive traverses three distinct ecoregions: the Rocky Mountain Front, the Big Hole Valley, and the Wyoming Basin. South of Missoula, I-90 follows the Clark Fork River through narrow canyons with exposed Precambrian rocks.

• Look for the Pintler Scenic Loop (MT-1) from Anaconda to Wisdom as an optional detour—adds 30 miles but offers views of the Anaconda-Pintler Wilderness.
• The Big Hole Valley between Divide and Dillon is a broad agricultural basin known for hay fields and cattle ranches. In summer, wildflowers carpet the meadows.
• Near Monida Pass (6,860 ft), the landscape shifts to high desert sagebrush steppe, with volcanic buttes from the Yellowstone hotspot.

Local commerce is concentrated in Missoula (university town, many breweries), Butte (historic mining town), and Dillon (cowboy culture). Small shops in Lima and Monida sell homemade jerky and local crafts.

UNESCO World Heritage Sites: None directly on the route, but Yellowstone National Park (UNESCO) is a 2-hour detour from West Yellowstone (via US-191 from I-90 at Belgrade). The route passes near the Continental Divide, which is not a UNESCO site but is of geological significance.

Road quality is generally good: I-90 and I-15 are well-maintained, while US-93 and US-91 are two-lane highways with some chip-seal surfaces. Watch for wildlife—deer, elk, and moose are common near dawn and dusk, especially along US-93 south of Kalispell and US-91 near the Idaho border.

• Winter conditions: From November to March, snow and ice are expected, especially over Homestake Pass and Monida Pass. Chains are recommended for RVs.
• Family stops: Recommended breaks include Missoula's Carousel for Kids (free carousel) and Butte's Our Lady of the Rockies overlook (accessible via bus tour).
• Pet-friendly framework: Most rest areas have pet walks. In Missoula, Jacob's Island Bark Park is near I-90. Motels in Dillon and Butte often accept pets for a fee.

Fatigue management: Plan stops every 2 hours. Good rest zones include the Anaconda Rest Area (I-90 eastbound, mile 208) and the Clark Canyon Rest Area (I-15 southbound, near Dillon). For a longer break, pull off at the town of Whitehall for a walk along the Jefferson River.

Hidden off-route spots: Bannack State Park (ghost town) 20 miles west of Dillon via MT-278. The park preserves Montana's first territorial capital, with 50+ original buildings. Also, the Tendoy Mountains near Lima offer quiet hiking trails.

For more tips on discovering stops, see how to find the best stops and hidden gems between cities.