Starting in Idaho Falls along or just off of U.S. 20, there are three snowmobile dealerships—Action Motor Sports, Bott Ski-Doo/Yamaha and Precision Performance Products—which all feature a long tradition of serving the industry. You also have Starting Line Products, Boondockers and Motorfist headquartered in Idaho Falls and not too far off U.S. 20. Finally, SnoWest Magazine is located in downtown Idaho Falls and its editors spend a large portion of the winter traveling U.S. 20.
Just south of Rigby off exit 318 is Klim. At Rexburg off exit 332 you have Rexburg Motor Sports. Farther north at St. Anthony about a mile off exit 346 is Mountain Tek Performance. As you pass through Ashton on US 20 you see PMS Motorsports.
As you travel farther north on U.S. 20, you start to climb in elevation as you enter Targhee National Forest. This is where the snow comes early and stacks deep. Here the businesses are less performance-oriented and more service-oriented.
In Island Park, there are several businesses—Island Park Adventures, Pond's Lodge, The Pines, Sawtelle Mountain Resort and High Mountain Adventures—that have served the area for years. This is the hub of winter recreation.
At the northern end of U.S. 20 is West Yellowstone, a small Montana community that has been the center of snowmobiling since its introduction to the West. The town is full of service-oriented businesses including: 3 Bears Lodge & Restaurant, Polaris West, Yellowstone Adventures, Backcountry Adventures, Brandin Iron Inn and The Gusher.
Although U.S. 20 may not lead to Rome, it does take you to the Milliarium Candidum or Brilliant White Milestone of snow that turns winter into a snowmobile mecca.