Cannon Beach to Choteau: Epic Pacific to Plains Road Trip

Did you know that the route from Cannon Beach to Choteau roughly follows the path of the historic Lewis and Clark Expedition's return journey? While they took the Missouri River, you'll take US-26, I-84, I-82, I-90, and US-89 across nearly 1,000 miles of diverse American landscape.

This drive connects the lush, misty rainforests of the Oregon Coast to the arid, dinosaur-dotted plains of Montana's Rocky Mountain Front. The journey typically takes 15-17 hours of pure driving time, but you'll want to budget at least 3 days to fully experience the natural wonders and quirky towns along the way.

The primary route is US-26 east from Cannon Beach to Portland, then I-84 east through the Columbia River Gorge to Pendleton. Continue on I-84 into Idaho, then I-86 and I-15 north to Dillon, MT. Finally, take US-287 and US-89 to Choteau.

Gas stations are plentiful along interstates but sparse in rural stretches, especially between Pendleton and Boise (120 miles without services) and between Dillon and Choteau (90 miles). Always fill up when you see a station.

• Best fuel stops: The Dalles (OR), Pendleton (OR), Baker City (OR), Boise (ID), Missoula (MT)
• Road conditions vary: I-84 in Oregon is well-maintained; US-89 in Montana can be narrow with animal crossings.
• Cell service is strong on interstates but drops in mountain passes and Montana plains; download offline maps.

Tolls: None on this route. Driving during daylight hours is recommended, especially in Montana where deer and elk are common at dawn and dusk.

Rental cars are available in Portland and Boise; a high-clearance vehicle is not necessary but can be helpful on gravel side roads to hidden spots.

The journey begins in the lush, temperate rainforest of Cannon Beach, where Haystack Rock looms over a sandy shore. As you head east, the climate dries dramatically when you crest the Coast Range into the Willamette Valley's fertile farmland.

The Columbia River Gorge offers a stunning transition: waterfalls like Multnomah Falls, towering basalt cliffs, and windsurfers darting across the river. Stop at the Rowena Crest Viewpoint for a panorama that captures the river's carved path.

After crossing into Idaho, the landscape opens into high desert sagebrush and volcanic plains. Near Boise, the Snake River runs through fertile farmland. Then, northern Montana brings the Rocky Mountain Front—a dramatic rise of peaks, home to grizzlies and bighorn sheep.

Local commerce includes Pendleton's woolen mills, Baker City's historic downtown, and Choteau's dinosaur museums. The how to find the best stops and hidden gems between cities guide can help you discover unique spots like the Oregon Trail Interpretive Center or the ghost town of Bannack.

This route is generally safe, but watch for wildlife at dawn and dusk, especially in Montana (deer, elk, moose). Icy conditions can occur in mountain passes, notably the Blue Mountains in Oregon and Lolo Pass in Montana. Carry chains in winter.

For families, the best stops include: the Oregon Museum of Science and Industry (OMSI) in Portland, the Pendleton Aquatic Center, and the Montana Dinosaur Center in Bynum (parent of Choteau). Break up driving with kid-friendly hikes at the Columbia Gorge or Yellowstone (slight detour).

Manage fatigue by splitting the drive into 3-4 hour segments. Rest zones with picnic areas are abundant along I-84; in Montana, rest areas are sparse but welcome. Recommended overnight stops: Pendleton (OR), Boise (ID), and Missoula (MT).

Pet-friendly framework: Many hotels along I-84 and I-90 accept pets. National forests like Malheur and the Lodgepole Campground near Choteau offer off-leash areas. Always check for tick hazards in grassy areas.

• Family highlights: Portland's Children's Museum, Boise Zoo, Choteau's Old Trail Museum (dinosaur fossils)
• Pet stops: Walker Basin Rest Area (ID), Lolo Creek Campground (MT)