Claremont, CA to Blanding, UT: Road Guide

This 650-mile route from Claremont, CA to Blanding, UT traces the ancient shoreline of Lake Bonneville, a Pleistocene giant that once covered much of Utah. You'll cross the Mojave Desert, climb the Colorado Plateau, and descend into red-rock canyon country. The drive takes roughly 9–10 hours without stops, but expect 11–13 hours with breaks and attractions.

From Claremont, take I-10 east to I-15 north, then merge onto I-70 east near Cove Fort, UT, and finally take US-191 south into Blanding. The route is a study in contrasts: hyper-arid basins at 2,000 ft elevation near Barstow, then alpine forests topping 8,000 ft on the Markagunt Plateau, ending at 6,100 ft in Blanding. For more on planning stops, see how to find the best stops and hidden gems between cities.

Infrastructure Safety: I-15 and I-70 are well-maintained with adequate lighting at interchanges. US-191 has no lighting; use high beams where safe. In winter, snow can blanket I-70 between Salina and Green River; check UDOT with 511. Summer temperatures exceed 100°F in the desert; carry extra water.

Family and Child Suitability: The route offers numerous kid-friendly stops. The Las Vegas Strip is skippable, but the Discovery Children's Museum and Springs Preserve are excellent. St. George's Red Cliffs Desert Reserve has easy hikes. In Blanding, the Dinosaur Museum has interactive exhibits.

• Pet-Friendly Framework: Most rest stops have pet areas. Dog-friendly lodging includes Best Western Plus in Blanding. The St. George Petroglyph Park allows leashed pets.
• Fatigue Management: Use Dinosaurland Rest Area (I-70, mile 540) and Crescent Junction Rest Area (US-191, mile 550). Both have shaded picnic tables. Average stop every 2 hours.

Hidden Off-Route Spots: From I-70 exit 131, drive 8 miles north to the San Rafael Swell's Wedge Overlook, a mini Grand Canyon with no crowds. Near Blanding, combine Mule Canyon Ruins (US-191 south) and Hovenweep National Monument (east of Blanding) for remarkable Ancestral Puebloan towers.

• Climatic Conditions: Spring and fall are ideal (60–80°F). Summer is scorching (100+°F) but manageable with early starts. Winter brings snow above 5,000 ft—carry chains.

Fuel stops are plentiful along I-15 and I-70, but become sparse on US-191 south of Moab. Gas prices vary: expect $4.50–$5.00 per gallon in California, dropping to $3.80–$4.20 in Utah. Plan to fill up in St. George and again in Moab before the final leg.

• Last reliable California gas: Barstow (mile 75)
• Nevada stretch: Primm (mile 120) and Las Vegas (mile 200)
• Utah: St. George (mile 375), Beaver (mile 440), Salina (mile 500), Green River (mile 560)

Tolls: None on this route. Road quality is excellent on interstates, with wide shoulders and median barriers. US-191 from I-70 to Blanding is a two-lane undivided highway with occasional passing lanes; watch for wildlife at dawn/dusk.

This drive slices through four distinct eco-regions. The Mojave Desert (Claremont to Las Vegas) features creosote bush and Joshua trees. The Great Basin (Las Vegas to Beaver, UT) transitions to sagebrush and juniper. The Colorado Plateau (Beaver to Blanding) erupts in vermilion cliffs, hoodoos, and deep canyons.

• Natural Attractions: Zion National Park (detour via UT-9 from I-15), Bryce Canyon (detour via UT-12), Goblin Valley (near Green River), Natural Bridges National Monument (west of Blanding)
• UNESCO Sites: While none fall directly on the route, Zion (WBHS-listed), Grand Canyon (accessible from Williams, AZ), and Mesa Verde (near Cortez, CO) are within a 2-hour detour.

Local Commerce: In Blanding, the Utah Diné Bikéyah visitor center sells Navajo rugs and pottery. The Edge of the Cedars State Park Museum features ancestral Puebloan artifacts. Dine at the Red Sage restaurant for Navajo tacos or Patio Drive-In for fry bread.