Vail to McCall Road Trip: Epic Rockies to Idaho Journey

This route traces the historic trail of the 1860s Mullan Road, the first wagon road through the Rockies to the Pacific. Today, you'll drive I-70 West, then US-40 and US-191 through Utah and Wyoming before cutting through the high deserts of Idaho on US-20 and ID-55. The entire drive spans approximately 800 miles and takes about 13-14 hours without stops. But of course, you'll want to linger. The question is it worth driving Vail, CO to McCall, ID is answered with a resounding yes for anyone who loves mountain views, hot springs, and small-town charm.

Our focus: best stops Vail, CO to McCall, ID and things to do between Vail, CO and McCall, ID. This guide follows the principle outlined in how to find the best stops and hidden gems between cities – prioritize detours that reveal authentic landscapes and local culture. The table below summarizes the key segments.

Understanding how long to drive Vail, CO to McCall, ID is just the start. The route mixes interstate, two-lane highways, and mountain passes. Fuel up in larger towns – distances between gas stations can exceed 60 miles in parts of Utah and Idaho. Expect elevation changes from 8,000 ft in Vail to 4,000 ft in Salt Lake and back to 5,000 ft in McCall. Winter driving requires chains or snow tires for sections like Idaho 55.

Key road numbers:

• I-70 West from Vail to near Cisco, UT
• US-191 North from Helper to Vernal
• US-40 West from Vernal to Heber City
• I-80 West through SLC to US-20 West
• US-20 West to ID-55 North to McCall

Cell service is spotty in the canyons and deserts. Download offline maps. The is it worth driving Vail, CO to McCall, ID question hinges on your tolerance for long stretches – but the rewards are immense.

Safety: I-70's Glenwood Canyon has tunnels and steep grades; check weather. US-191 in Utah is winding but scenic. Idaho's US-20 can be monotonous – watch for drowsiness. Use rest areas near Green River, UT (milepost 160), and in Idaho near Bliss (milepost 140). For family suitability, plan stops every 2 hours. Dinosaur National Monument offers hands-on exhibits. In SLC, the Natural History Museum of Utah has a dinosaur hall. For kids, the Tautphaus Park Zoo in Idaho Falls is a good stretch break.

Pet-friendly framework: Most national forests allow pets on leash. Consider the Wasatch-Cache National Forest near SLC for a quick hike. Hotels in McCall and SLC are mostly pet-friendly, but call ahead. Hidden off-route spots: the timpanogos Cave National Monument (near American Fork) and the limestone caverns at Minnetonka Cave (near St. Charles, ID) – both require moderate hikes. Fatigue management: the route's high desert sections can be hypnotic due to long straight roads. Schedule stops at small towns like Duchesne, UT, and Mountain Home, ID, for coffee and a walk.

From Vail, you drop into Glenwood Canyon, a 12-mile wonder of sheer cliffs and rushing rivers. Beyond, the landscape opens into the arid Colorado Plateau. Dinosaur National Monument in Jensen, Utah, offers exposed dinosaur fossils embedded in rock – a unique stop where you can touch Jurassic bones. The visitor center is excellent for families.

Further west, the Wasatch Range rises near Park City. Consider a short detour to Midway's crater, a geothermal spring inside a 55-foot dome. In Idaho, the Snake River Plain presents vast lava fields and the spectacular Shoshone Falls (higher than Niagara in spring). The cuisine infrastructure is modest – best bets are Vernal (Mexican), SLC (diverse), and McCall (farm-to-table). Local commerce includes artisan cheese in SLC's Liberty Heights Fresh and McCall's potato-based treats.

The route passes near no UNESCO World Heritage Sites directly, but a slight detour east from I-15 gets you to the Yellowstone and Grand Teton areas (both UNESCO aspirant). For a pure route, the closest is the Mammoth Cave Area (not on this route). However, the Dinosaur National Monument is a proposed site. The Great Salt Lake is a UNESCO biosphere reserve. It's worth noting that the Minidoka National Monument near Jerome, ID, is a historic site for Japanese American internment – a sobering stop.