Big Sky, MT to Hatch, UT: Epic Road Trip Guide

Did you know that the route from Big Sky, Montana to Hatch, Utah follows a historic corridor used by the Shoshone and later the Mormon pioneers? The drive spans approximately 700 miles, mostly along US-89 and I-15, crossing three states and three major mountain ranges. This guide will help you turn a simple road trip into an unforgettable journey.

The journey takes about 10-12 hours of pure driving time, but you will want to linger. From the jagged peaks of the Gallatin Range to the red rocks of Southern Utah, the scenery is world-class. Along the way, discover how to find the best stops and hidden gems between cities with our tips: how to find the best stops and hidden gems between cities.

This road trip primarily follows US-191 from Big Sky to I-15 near Idaho Falls, then I-15 south to Utah, and finally US-89 from the Sevier Junction to Hatch. The total distance is about 700 miles. Plan for at least two fuel stops: one near Idaho Falls and another around Provo, UT.

Fuel costs vary, with Montana and Idaho having slightly cheaper gas than Utah. Expect to pay around $3.50 per gallon as of late 2023. Tolls are minimal; the only notable toll is on the I-15 express lanes in Salt Lake City (optional, about $1-3).

• Fuel stop 1: Idaho Falls, ID (mile 200) – multiple stations near the interstate.
• Fuel stop 2: Springville, UT (mile 450) – just off I-15.

Road conditions are generally excellent. I-15 is a modern divided highway, while US-89 from Big Sky is a two-lane road with some winding sections near the Gallatin Canyon. Winter travel requires snow tires or chains from October through April. Check local weather and road reports before departure.

The drive showcases a stunning transition from the alpine meadows of Montana to the slickrock canyons of Utah. In the first leg, US-191 cuts through the Gallatin National Forest, offering views of the Spanish Peaks and Madison Range. South of West Yellowstone, the landscape opens into the Snake River Plain, dotted with potato farms.

As you enter Utah, I-15 skirts the Great Salt Lake and then climbs into the Wasatch Range. South of Provo, the route passes Utah Valley with its vibrant orchards. Finally, US-89 from Panquitch to Hatch winds through the Dixie National Forest, with red sandstone cliffs and mesas reminiscent of Bryce Canyon.

Local commerce along the route includes farmers' markets in Idaho Falls (seasonal), the historic Utah State Capitol in Salt Lake City, and the charming town of Spring City (artist colony). For unique souvenirs, stop at the Paris Ice Cave in Idaho or the BYU Creamery in Provo for fantastic ice cream.

• Must-see: Gallatin Canyon (MT) – dramatic cliffs and river views.
• Must-see: Idaho Falls Greenbelt – a scenic riverside walk.
• Must-see: Utah State Capitol (SLC) – free tours of the neoclassical building.
• Local food: Funky's Drive-In (Idaho Falls) – classic American burgers.
• Local food: Hatch Family Chocolates (Salt Lake City) – artisan treats.

Road safety: I-15 has a speed limit of 80 mph in rural Idaho and 75 in Utah, but two-lane roads require caution. Wildlife crossings are common in Montana (elk, deer) and Utah (pronghorn). Always stay alert at dawn and dusk. The route is well-lit in urban areas, but remote sections can be dark.

Fatigue management: Plan stops every 2 hours or 150 miles. Rest areas with restrooms are frequent on I-15; notable ones include the Sage Creek Rest Area (MT) and the Salt Creek Rest Area (UT). For longer breaks, consider the Idaho Falls City Park (playground, picnic) or the Springville Recreation Center.

Family suitability: This trip is excellent for families. Highlights include the Yellowstone Giant Museum in West Yellowstone (dinosaur skeletons) and the Living Planet Aquarium in Draper, UT (touch tanks). Many rest stops have picnic tables. Kid-friendly restaurants include Cracker Barrel in Idaho Falls and training tables in Utah.

Pet-friendly framework: Most hotels and motels along the route accept pets with a fee. Rest areas have designated pet areas. The route passes several dog parks: the Idaho Falls Dog Park and the Tanner Park in Salt Lake City. Always carry water and waste bags.

• Safety tip: Use the MyState smartphone apps for real-time road conditions.
• Family stop: Grand Teton National Park (detour ~30 min) – spectacular views.
• Pet stop: Spring Creek Park (Idaho Falls) – off-leash area.
• Fatigue fighter: Caffeine and a short nap at a rest area.