Baker City to Havre: High Desert Road Trip Guide

This route spans from Oregon Trail history to Montana's Hi-Line, crossing the Snake River Plain and the Continental Divide near Butte. It's a roughly 530-mile drive that can be done in two long days or three relaxed ones. Here's a no-nonsense guide to making it worthwhile.

From the Blue Mountains basalt flows to the sagebrush plains of Idaho and Montana, the geology is a museum of volcanic and glacial activity. In Butte, the Berkeley Pit's toxic lake is a stark reminder of mining history. The route passes near two UNESCO World Heritage Sites: Yellowstone and Waterton-Glacier International Peace Park (via a detour).

Agriculture hubs like Twin Falls and Malta support local diners and bakeries, but don't expect gourmet. Small-town gas stations often have surprisingly good homemade pastries. For hidden gems, consider the Craters of the Moon National Monument (off I-15 near Arco) and the Bear River Migratory Bird Refuge near Brigham City (slight detour).

The primary route is I-84 east to Boise, then I-15 north to Butte, then US-87/US-2 northeast to Havre. Roads are well-maintained with mountain passes and long rural stretches. Expect heavy truck traffic near Boise and butte; fuel stations are sparse between towns like Arco and Malta.

• Fuel stops: Boise (mile 115), Twin Falls (mile 173), Idaho Falls (mile 226), Butte (mile 460), Great Falls (mile 510), Havre (mile 530)
• Cost: expect $4.50-$5.50/gal in remote areas vs $4.00-$4.50 in cities.
• Plan fuel purchase before leaving major towns; some stretches >100 miles without services.

Winter driving can be hazardous with ice and snow, especially on Monida Pass (I-15) and Rogers Pass (MT-287). Summer brings thunderstorm hail and occasional wildfire smoke. Cell coverage is spotty in central Idaho and Montana.

Rest areas every 50-100 miles on interstates, but fewer on two-lane US-2. Plan rest in Twin Falls, Idaho Falls, and Butte. For families, consider the World Center for Birds of Prey in Boise and the Children's Museum of Montana in Great Falls. Pets are welcome at most rest stops and many motels; never leave pets unattended in hot cars. To stay alert, stop every 2 hours and switch drivers on longer legs.

Uncover more secrets with this guide: how to find the best stops and hidden gems between cities.