Viper 300
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Viper 100 - Shelby Farms Park, March 19–20, 2027
The event is a multi-distance trail ultrarace held inside Shelby Farms Park in Memphis, TN. Distances offered include:
- 100 Mile
- 107K (66.8 miles)
- 53K
- 25K (about 15.5 miles)
The course uses a 33.4-mile loop that mixes paved greenways and dirt trails, passing lakes, forests, and open parkland. All distances finish at Hyde Lake Pavilion, which serves as race headquarters and the final aid station. The park setting may include local wildlife sightings.
Four fully stocked aid stations are available on the loop. Crew access is allowed at the Refuge Aid Station, the Tour de Wolf (TDW) Aid Station, and Hyde Lake Pavilion. The Bridge Aid Station is not open to crew. Drop bags are permitted at TDW and Hyde Lake Pavilion. The Hyde Lake Pavilion also provides a sleep station with cots, pillows, and blankets for longer-distance runners.
Parking is located at the Tour de Wolf (TDW) Pavilion aid station area, and runners will pass vehicles twice each loop. Live tracking is provided for the 100 Mile and 100K entries.
Pacers are permitted for the 100 Mile and 107K after completing one full loop; only one pacer may accompany a runner at a time and pacers must follow the event pacer rules. Registrations are non-refundable and non-transferable; deferral credits are available on a sliding schedule before March 1, 2027. Visit the organization's website for the most recent information.
