Follow more than 130 miles of the original route that horse-and-rider mail delivery took on the Pony Express Trail Backcountry Byway from Fairfield to Callao. The trail begins at one of the former stops, in Camp Floyd/Stagecoach Inn State Park, 25 miles southwest of I-15 along Hwy 73. Most of the road is maintained gravel or dirt and is passable to ordinary cars in good weather. In winter, snow may close the route; watch for flash floods in summer.
