In 2014 and 2015 the author with several other riders from the Backcountry Horsemen of America re rode the Old Spanish Trail from San Bernardino California to Santa Fe New Mexico. This is their story, and a guide to the route as done by the riders. The Old Spanish Trail is today, America's longest National Park, The Old Spanish National Historic Trail. The volunteers of the Old Spanish Trail Association along with other members of the Backcountry Horsemen of America assisted the riders. This guide is set up as a day by day account. Bicyclists, hikers and vehicle users can use it to plan day trips, section trips, or the entire 1200 mile trail.