Sacajawea Historic Byway

Tales of the past surround you on every side as you drive the Sacajawea Historic Byway. Parallel to the Continental Divide, this byway makes its way through the Lemhi River Valley, summits the Lemhi Pass and then drops onto the Snake River Plain. Discover rich Native American history and learn more about Sacajawea’s story and her impact on the Corps of Discovery and Idaho.


132 miles
212.43 km

Time Icon


2 hours, 30 minutes

When to Visit

Spring, Summer, Fall

31 Byways. 31 Ways to Be Inspired.

A variety of scenic, natural, historic, recreational, archeological and cultural experiences can be found on Idaho’s 31 scenic byways. View the video to get a taste of the adventures that await you, and start planning your next road trip.

Road Trip Tips

Turn-by-Turn Directions: The byway begins at the intersection of Interstate 15 and Idaho 33 at exit 143. Follow Idaho 33 for about 12 miles west to its junction with Idaho 28. Finally, take Idaho 28 northwest for 120 miles to Salmon.

Road Conditions: This byway consists of two-lane paved roads with areas for passing. Watch for icy conditions and snow drifts in winter.

Full Services in: Salmon

Partial Services in: Terreton, Mud Lake, Lone Pine, Lemhi and Tendoy

Full Services: When gas, food and lodging are available

Partial Services: When gas and a few other facilities are available

Nearby Adventures

Pull off the road for a deep breath in wide-open Idaho—explore Camas National Wildlife Refuge, drive into Mud Lake Wildlife Management Area or hike one of the many historic trails that wind through the Sacajawea Scenic Byway area.

Download Before You Hit the Road

Start planning your epic Idaho road trip with the help of these free travel publications.

Idaho Roadsider

State Highway Map

Travel Tips

Need some ideas for your next Idaho road trip? Check out these travel tips and start planning your adventure.

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