Viper 300
Cordova, United States • 9-14 Mar 2026
The Viper 300 is an ultra-endurance trail running event held in Shelby Farms Park, Cordova, Tennessee, featuring race distances of 300, 200, and 100 miles, as well as 53K and 25K options. The course consists of a challenging 33.4-mile loop combining paved paths and single-track trails through scenic lakes, woodlands, and wildlife habitats, including deer and buffalo. The race offers a rugged test of stamina with fully manned aid stations, live tracking for longer distances, and support for pacers on the ultra distances. Set in one of the largest urban parks in the U.S., the event provides a unique blend of natural beauty and community spirit for runners seeking a demanding and memorable adventure. Visit the organization's website for the most recent information.