McCall, ID to Hanksville, UT: Desert Canyon Road Trip Guide

This 450-mile, 7–8 hour journey from McCall, ID (elev. 5,010 ft) to Hanksville, UT (elev. 4,300 ft) traces a dramatic descent from the pine-clad slopes of the Payette National Forest into the otherworldly badlands of the San Rafael Swell. The route is a study in contrasts: mountain air gives way to desert thermals, and dense forests yield to vast horizons of petrified sand dunes and bentonite clay.

Historically, this corridor follows portions of the Oregon Trail and later the transcontinental railroad alignment. In Hanksville, you'll find remnants of the Old West—the town's name honors early Mormon settlers and outlaws alike. One peculiar local note: the highway signs near Hanksville warn of “flash flood area” even in clear weather, a testament to the region's sudden, violent storms.

Route Overview

Budget at least a full day for the drive, though two days allow for deeper exploration. Peak travel seasons: May–June and September–October offer mild temperatures. Winter can bring snow in Idaho and icy patches in Utah's higher passes.

Fuel stops are sparse after leaving I-15. Fill up in Twin Falls (last major services for 150 miles) and again in Richfield, UT, about 100 miles south of Hanksville. Gas stations in Hanksville are limited (one 24-hour station, one with limited hours). Carry a spare gas can if driving a low-range vehicle.

• Highway 55 from McCall to Boise: winding two-lane road, watch for logging trucks and wildlife.
• I-84 from Boise to Twin Falls: smooth interstate with 75 mph speed limit.
• US-93 south of Twin Falls: well-maintained, but remote. Expect long distances between rest areas.
• UT-24 from I-70 to Hanksville: scenic two-lane with steep grades and sharp curves; slow down for sudden turns.

Cell coverage: Strong throughout Idaho and Utah's I-15 corridor. On UT-24, Verizon and T-Mobile have intermittent service; AT&T is unreliable. Download offline maps before you leave. Emergency call boxes are rare; carry a first aid kit and extra water.

For a detailed guide on how to find the best stops and hidden gems between cities, consult Wayro's curated tips.

The drive crosses four distinct ecoregions: Idaho's subalpine forests, the Snake River Plain's basalt tablelands, the Great Basin's sagebrush steppe, and the Colorado Plateau's red rock deserts. Each offers unique photo opportunities and geological wonders.

• Payette River Scenic Byway (Hwy 55): Emerald green water, granite boulders, and whitewater rafters. Stop at Kelly's Whitewater Park in Riggins.
• Shoshone Falls (Twin Falls): Higher than Niagara, this 212-foot cascade thunders over basalt cliffs during spring runoff.
• City of Rocks National Reserve: 60 miles east of Twin Falls on ID-77, a surreal landscape of granite spires popular with climbers.
• San Rafael Swell (UT-24): A 60-mile-long anticline exposing Jurassic and Cretaceous strata. Check out the Mars-like terrain of Factory Butte and the Bentonite Hills.

Local commerce thrives on agritourism and roadside stands. In Gooding, ID, buy potatoes and honey at the Idaho Produce stand. In Hanksville, the Hollow Mountain gas station—built inside a sandstone cliff—is a quirky must-see. The Hanksville-Burpee Museum houses a complete Deinonychus skeleton found nearby.

For a taste of Mormon pioneer heritage, visit the Old Ivie Creek Schoolhouse near Emery, UT, on UT-24. It's a restored 1898 one-room school open by appointment.

UNESCO World Heritage Sites within a detour: The site is not directly on route, but a 2-hour detour east on I-70 leads to Dinosaur National Monument (not a UNESCO site, but often listed on UNESCO tentative lists). For true UNESCO, consider the 3-hour detour to Mesa Verde National Park (west via US-491). However, within the core route, no UNESCO sites exist; instead, the entire San Rafael Swell is a National Conservation Area.

Road quality varies significantly. Idaho highways are generally well-paved, though rural sections may have frost heaves in spring. Utah's UT-24 has narrow shoulders and occasional gravel washouts. In winter, carry chains; the I-15 climb near Cove Fort can ice over.

• Rest zones: Rest area at milepost 99 on I-84 west of Burley; clean bathrooms and picnic tables. The Sinclair station in Scipio, UT (I-70 exit 156) has a large parking lot for RVs.
• Family-friendly stops: The Idaho Potato Museum in Blackfoot (off-route 45 min) or the free Living Planet Aquarium in Sandy, UT. In Hanksville, the Mars Desert Research Station offers tours on Saturdays.
• Pet-friendly: Most rest areas allow dogs on leashes. The Petroglyph Trail near Hanksville (paved, 0.5 mi) is well-suited for canine companions. Carry water and poop bags, as desert heat can be intense.

Fatigue management: The long, straight stretches of I-84 and US-93 can induce drowsiness. Plan stops every 2 hours. At the rest area near the Idaho-Utah border (exit 1 on I-84), there's a walking path along the Bear River. In Richfield, the Sevier County Veterans Memorial Park (200 W 200 N) has shade and picnic shelters.

Hidden off-route spots: The Little Sahara Sand Dunes (50 min west of Nephi, UT) offer dune buggy rentals. The Goblin Valley State Park (30 min south of Hanksville) features hoodoos and a 3-mile hiking loop. One local secret: the “Moki Dugway” (UT-261, 1.5 hrs south) is a hairpin gravel road with dizzying views of Monument Valley.

For the best driving experience, set out early (by 7 AM) to avoid afternoon thunderstorms in Utah. The optimal season is late September when temperatures are mild and golden hour light illuminates the Bentonite Hills in shades of orange and purple. In July, temperatures can exceed 100°F; carry extra water and avoid hiking midday.