On this route, travelers can retrace some steps of Idaho’s pioneers and follow the path taken by early-day Yellowstone Park visitors. From Franklin, Idaho’s oldest settlement, it follows US Hwy 91 north to Preston, then Idaho State Hwy 34 north through Thatcher and Grace to US Hwy 30. It then goes east to Soda Springs, where it meets the Oregon Trail-Bear Lake Scenic Byway; and from there it heads north on Idaho State Hwy 34 to the Wyoming border at Freedom. This route offers the shortest distance and time between Salt Lake City and Yellowstone Park. Check the website for more information on the routes.