Glenwood Springs to Butte: A Rocky Mountain Road Trip Guide

This route follows the old Ute Trail, later paved as US-191 and I-15, connecting Colorado's hot springs to Montana's mining heritage. The 510-mile drive takes roughly 8-9 hours without stops, but you'll want to linger.

Highways involved: I-70 West from Glenwood Springs, then US-191 North through Utah, merging onto I-80 West and I-84 North, finally I-15 North into Butte. The stretch through Utah's Book Cliffs is particularly isolated, so plan fuel stops.

For more on crafting your own itinerary, check out how to find the best stops and hidden gems between cities.

Fuel stations are sparse between Green River, UT and Butte, MT. Fill up in Price, UT (last major town before the long haul). Expect gas prices to vary; Colorado tends to be cheaper than Utah or Montana.

• Total driving time: 8–9 hours without stops. Plan for 10–12 hours with breaks.
• Road quality: Good on interstates, but US-191 through Utah has narrow two-lane sections with passing lanes.
• Cell service: Spotty in Utah's canyon lands and mountain passes. Download offline maps.

Rest areas: Utah has well-maintained rest stops on I-70 and I-15. In Montana, rest areas are less frequent; use truck stops in Dillon or Butte.

The route traverses three physiographic provinces: the Colorado Rockies, the Colorado Plateau, and the Northern Rocky Mountains. Expect dramatic shifts from alpine forests to red rock canyons to sagebrush steppe.

Key natural attractions:

• Glenwood Canyon (I-70): A narrow river canyon with waterfalls and rafting. Stop at Hanging Lake (permit required).
• Book Cliffs (US-191): One of the longest continuous cliff faces in the world, visible for miles.
• Bitterroot Valley (I-15 north of Dillon): Lush agricultural valley with views of the Bitterroot Mountains.

UNESCO World Heritage Sites: The route passes near none directly, but Mesa Verde National Park (CO) is a detour. Within the area, the nearby Dinosaur National Monument (UT/CO) is a UNESCO site for its fossil deposits.

Local commerce in Butte: Known for copper mining, Butte's historic district has the World Museum of Mining and the Berkeley Pit. Glenwood Springs offers hot springs and the historic Hotel Colorado.

Winter driving is hazardous from October to April, especially over passes like Soldier Summit (US-6) and Monida Pass (I-15). Carry chains and blankets. Summer thunderstorms can cause flash floods in Utah canyons.

Family-friendly stops:

• Price, UT: Prehistoric Museum with dinosaurs and natural history exhibits.
• Pocatello, ID: Zoo Idaho and the Idaho Museum of Natural History.
• Butte, MT: Our Lady of the Rockies statue and the Butte Silver Bow Arts Chateau.

Pet-friendly framework: Most state rest areas allow leashed pets. Hotels in Price and Butte (e.g., La Quinta, Motel 6) welcome pets. Carry water and poop bags for desert stretches.

Fatigue management: Drive in 2-hour shifts. Use the rest area at the Utah/Idaho border (I-15). The scenery is monotonous on US-191; listen to audiobooks to stay alert.

Hidden off-route spots:

• Nine Mile Canyon (UT): A 40-mile detour off US-191 near Wellington, with thousands of petroglyphs.
• Red Rock Pass (ID): A scenic alternate on I-15, offering views of the Portneuf Range.

Climatic conditions: Glenwood Springs averages 50°F in May, 85°F in July. Butte is cooler (45–75°F summer). The intervening desert can reach 100°F. Best travel months: May–June and September–October.

Culinary infrastructure: In Glenwood, try the Glenwood Canyon Brewpub. Price has Mi Castillo (Mexican). Butte's famous for pasties (meat pies) at Joe's Pasty Shop or the Butte Depot.