Deadwood to Salmon Road Trip: Scenic Drive Guide

The route from Deadwood, SD to Salmon, ID spans roughly 500 miles across South Dakota, Wyoming, and Montana, ending in Idaho. This drive follows US-85 north, then I-90 west, and US-287 south, crossing the Bighorn Mountains and entering the Lemhi Valley. A little-known fact: Deadwood's Main Street is part of the historic George S. Mickelson Trail, but your journey begins on SD-85, a two-lane road that quickly ascends into the Black Hills National Forest.

Driving Conditions and Safety

Winter storms (Nov-Apr) can close the Bighorn passes; carry chains. Summer thunderstorms bring sudden rain. The winding sections near Deadwood and the Bighorns require caution with RVs. Cell service is spotty from Buffalo to Greybull and in the mountains. Download offline maps. Always carry water and blankets.

• Emergency services: Dial 911; nearest hospital in Buffalo.
• Road alerts: WYDOT 511, MDT 511.
• Animal hazards: Dusk/dawn on US-212 and US-287.

Family and Pet-Friendly Stops

Kids will enjoy the Adams Museum in Deadwood and the Bighorn Canyon boat tours. Pets can stretch at the Buffalo, WY rest area with a dog park. The Medicine Wheel area allows leashed pets. In Salmon, the Lemhi River trail is pet-friendly. Plan stops every 2 hours to avoid fatigue.

• Recommended break: Lovell, WY - picnic at Bighorn Canyon.
• Family stop: Custer Battlefield Museum in Crow Agency.
• Rest zones: Sundance Rest Area, WY; Greybull City Park.

Hidden Off-Route Gems

Just off US-85 in South Dakota, the wye near Deadwood leads to the historic town of Lead. In Wyoming, the ghost town of Kirwin is a 20-mile unpaved detour from Meeteetse. Near Salmon, the Goldbug Hot Springs is a 1.5-mile hike from the road. For planning, use how to find the best stops and hidden gems between cities.

• Detour: Spotted Horse Ranch near Buffalo for horseback riding.
• Secret: Big Goose Canyon near Sheridan, WY.
• Local tip: Ask at Sinclair gas stations for road advice.

Black Hills to Bighorn Mountains

Leaving Deadwood, ponderosa pines and granite spires dominate. The transition to Wyoming opens into rolling plains. Near Sundance, the Devil's Tower National Monument is a 30-mile detour worth seeing. Continuing west, I-90 passes through the Thunder Basin National Grassland. At Buffalo, turn north on US-16 to climb the Bighorn Mountains. The Cloud Peak Skyway is breathtaking, with alpine meadows and switchbacks.

• Must-see: Bighorn Canyon National Recreation Area.
• Wildlife: Pronghorn, deer, and bighorn sheep.
• Photo stop: Medicine Wheel National Historic Landmark.

Montana Plains to Idaho's Lemhi Valley

After Lovell, WY, US-310 heads toward Montana through the Pryor Mountains. The landscape changes to sagebrush and irrigated fields. At Bearcreek, visit the historic coal mining town. Crossing into Montana near Belfry, the road follows the Clark's Fork River. In Salmon, ID, the Lemhi River Valley offers hot springs and the Sacagawea Interpretive Center.

• Local commerce: Al's Drive Inn in Greybull for burgers.
• Culture: Crow Fair in Crow Agency (August).
• UNESCO connection: Bighorn Medicine Wheel (candidate site).

Road Quality and Fuel

US-85 north from Deadwood is well-maintained but winding through the Black Hills. I-90 west across Wyoming is straight and fast, with ample rest stops. US-212 from Crow Agency to the Bighorn Mountains is scenic but narrow in places. Fuel stations are sparse between Buffalo, WY and Greybull, WY; fill up in Deadwood or Spearfish. In Montana, US-212 has limited services; plan to refuel in Crow Agency or Hardin.

• Estimated fuel cost: $60-$80 (mid-size car).
• Recommended apps: GasBuddy, Wayro for hidden gems.
• Road conditions: Check WYDOT and MDT before departure.

Rest Stops and Lodging

Key rest areas include the Sundale Rest Area near Sundance, WY, and the Bighorn Canyon Visitor Center in Fort Smith, MT. Overnight options: Buffalo, WY (Historic Buffalo Inn), or Greybull, WY (Greybull KOA). For a unique stay, book a cabin at the Medicine Wheel/Pryor Mountain area. In Salmon, ID, the Stagecoach Inn offers rustic charm.

• Deadwood to Buffalo: 3 hours, 160 miles.
• Buffalo to Salmon: 5-6 hours, 340 miles.
• Recommended midway stop: Greybull, WY.