Walla Walla, WA to Livingston, MT: Cross-Country Drive Guide

The Lewis and Clark expedition traversed this corridor in 1805, noting the confluence of the Snake and Clearwater rivers near what is now Clarkston, WA. Today, you follow a similar route along US-12 and I-90, covering 492 miles in about 8 hours of driving time, excluding stops.

This road trip from Walla Walla, WA to Livingston, MT crosses the rugged Bitterroot Range via Lolo Pass (5,235 ft), then sweeps across the Great Plains of Montana. The journey offers a microcosm of the American West: wheat fields, pine forests, and volcanic landscapes.

High-risk zones: Lolo Pass (icy curves, rockfall), I-90 near Drummond (deer crossings), and the two-lane section between Kooskia and Lolo. Carry emergency supplies: water, blankets, and a physical map, as cell service is intermittent from Kamiah to Lolo Hot Springs.

• Rest areas: Wildwood (US-12 East at milepost 65), Blodgett Canyon (near Hamilton), and Butte Rest Area (I-90 East).
• Family stops: Lewis and Clark Interpretive Center in Great Falls (detour), or the Idaho State Historical Museum in Orofino.

Fatigue management: The monotonous plains east of Butte induce drowsiness. Schedule breaks every 2 hours. For families, the Missoula Carousel (pet-friendly) and the Butte Superfund site tour (educational) are unique stops. Pets can stretch at Lolo National Forest picnic areas; carry water bowls.

Hidden off-route spots: The ghost town of Garnet (north of I-90 near Drummond) offers well-preserved 1890s buildings. For a natural soak, Lolo Hot Springs (natural pool) is 3 miles north of US-12.

The drive transitions from arid wheat fields to dense pine forests. Palouse Falls State Park (detour south of US-12 near Washtucna) features a 198-foot waterfall over columnar basalt. Lolo Pass marks the Continental Divide, offering hiking trails like the Lolo Creek Trail.

• Key vistas: Lolo Pass overlook, Cedar Grove trailhead, Clark Fork River canyon.
• Wildlife: Elk, bighorn sheep, and black bears are common; scan roadside meadows at dawn.

Local commerce includes farm stands selling Walla Walla sweet onions (June–August) and huckleberry products in Missoula. The town of Butte (detour for mining history) offers the Tintina Health Clinic for emergencies and the Butte Farmers Market (Wednesdays in summer).

UNESCO World Heritage Sites are absent along this route, but nearby Yellowstone National Park (150 miles south of Livingston) is a UNESCO site. Consider a side trip to the park's north entrance via Gardiner, MT.

Fuel stations are sparse east of Lewiston, with gaps of up to 60 miles along US-12. Plan to fill up in Walla Walla, Clarkston, and Missoula to avoid range anxiety. Gas prices tend to be higher in rural Idaho, so budget $55–70 each way.

• Best fuel stops: Walla Walla (numerous stations), Clarkston (Costco), Missoula (Arco), Butte (Sam's Club).
• Electric vehicle chargers: Level 2 chargers in Walla Walla, Clarkston, and Missoula; DC fast chargers in Coeur d'Alene and Butte.

Road quality is generally good on US-12 (two-lane, winding through mountains) and excellent on I-90 (divided interstate). However, sections of US-12 east of Lolo Pass have limited shoulders and steep grades. Winter driving requires chains or snow tires from November through April.

For a deeper dive on planning stops, see how to find the best stops and hidden gems between cities.