Pocatello to Alpine: Scenic Drive Guide

Leaving Pocatello, Idaho, the road to Alpine, Wyoming, begins with a climb through the Portneuf Gap, a natural passage used by the Oregon Trail pioneers. The route follows I-15 south and then US-89 east, a journey of roughly 160 miles.

The landscape transitions from the arid Snake River Plain to the pine-covered Caribou-Targhee National Forest, culminating in the alpine meadows of the Star Valley. This drive offers a mix of interstate speed and two-lane scenic curves, with a total driving time of about 3 hours without stops.

For families, the route is suitable if you break it into segments. The Lava Hot Springs and the Soda Springs Geyser are quick, engaging stops that allow kids to stretch. Rest areas are located at mile 47 (north of Pocatello) and near Geneva (mile 110), equipped with picnic tables and vending machines.

Pet owners will find numerous leash-friendly rest stops along the route, but only one official pet area at the Soda Springs welcome center. Many hotels in Alpine are pet-friendly, with a standard $50 fee.

Fatigue management is crucial: the long, straight stretches on I-15 can lull drivers. The recommended strategy is to stop every 90 minutes, and the 55-mph curves near Montpelier demand attention. Road safety is generally high, but watch for deer at dawn and dusk, especially between Geneve and Alpine.

Verdict: Is it worth driving? Yes, for the dazzling scenery and the contrast between Idaho's volcanic plains and Wyoming's peaks. But it's a drive to savor, not a race.

The drive's centerpiece is Caribou-Tarfhee National Forest, where you might spot moose and elk, particularly near Grays Lake National Wildlife Refuge. A detour to the Lava Hot Springs (exit 66) offers hot pools and a historic plunge, while the Soda Springs Geyser, a captive geyser that erupts every hour, is a quirky pit stop.

Alpine itself sits at the southern end of the spectacular Jackson Hole valley, with the Snake River offering rafting and fishing. The regional economy shifts from potato farming around Pocatello to tourism and ranching in Wyoming, reflected in the changing restaurant menus from fry sauce to elk burgers.

Climatically, the route spans from a high desert with low humidity (average annual precipitation 12 inches in Pocatello) to a snowy mountain climate (Alpine receives 40+ inches). The best driving weather is May and September, when temps range 60-75°F and wildflowers bloom. Winter drives, while beautiful, require caution.

Hidden off-route, the Idaho Potato Museum in Blackfoot (10 miles off I-15) is a family-friendly stop, and the Chesterfield Ghost Town offers historic pioneer buildings. These spots are often missed by fast travelers.

Fuel prices along the route average $3.50 per gallon, but can spike in smaller towns like Montpelier by $0.20. Budget around $40 for a full round trip if you start with a full tank.

The road quality is generally excellent: I-15 is a four-lane divided highway, while US-89 has two lanes with occasional passing lanes. Cell coverage is reliable until McCammon, then patchy in the mountains, and returns near Soda Springs.

• Essential restrooms are available at all exit gas stations, but not in the mountain passes.
• Food options are limited outside Pocatello and Alpine; carry snacks.
• Snow tires are required from October to April; chains might be mandatory in storms.

Travelers looking for hidden gems en route can benefit from knowing how to find the best stops and hidden gems between cities.