Viper 300
Cordova, United States • 9-14 Mar 2026
Event overview
The Viper 300 takes place in Shelby Farms Park, Cordova, Tennessee, from March 9 to March 14, 2026. Distances offered include:
- 300 Miler
- 200 Miler
- 100 Miler
- 53K
- 25K
Registration closes on Saturday, March 7, 2026. Packet pickup is scheduled at the Hyde Lake Pavilion Aid Station inside Shelby Farms Park on Sunday, March 8 (early afternoon) and reopens the morning of March 9 while the park is open. Live tracking will be available for the 300 and 200 mile races.
Course, aid stations and rules
The course is a roughly 33.4-mile loop with a mix of paved paths and single-track trails that pass lakes and wooded areas. The event uses two fully manned aid stations at Hyde Lake Pavilion (start/finish) and Tour de Wolf Pavilion; runners will visit the Tour de Wolf Aid Station twice each loop. There is at least one additional unmanned aid station on course. Drop bags are permitted at both manned aid stations and covered sleeping areas are available there. Runners may sleep in vehicles at aid stations.
Key rules include no dropping to a shorter race distance during the event, no muling, no crewing outside manned aid stations, and no cutting the course. Pacers are allowed for the 300, 200 and 100 mile distances with limits (one pacer at a time, pacers must sign a release, pacers may not carry supplies for the runner). No pacers are permitted for the 53K or 25K. Refunds are not permitted; entries may be deferred for partial race credit if done in advance. Visit the organization's website for the most recent information.