Cobra Den Winter Series
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Cobra Den Winter Series
The Cobra Den Winter Series is a set of four trail races held at Shelby Farms Park in Memphis, Tennessee, organized by Mamba Trail Runners. The series runs from December 12, 2026 through February 27, 2027 and alternates between the Wolf River Trails and the Tour de Wolf trail systems at Shelby Farms Park.
The series is offered in two formats with four races each:
- Short Series: 5k, 10k, 5 miler, 7 miler
- Long Series: 10k, 8 miler, 10 miler, half marathon
Participants earn points at each race toward an overall series championship. Age group awards are presented at each race in the divisions 0–9, 10–19, 20–29, 30–39, 40–49, 50–59, 60–69, and 70 plus, and overall male and female awards are also given.
Race shirts are provided while supplies last. Packet pickup for the series is scheduled the day before the first race at the Wolf River Refuge Trailhead, and additional race-morning pickup is available for later events. A virtual series option allows participants to complete each race distance remotely during the event weekends; virtual results are separate from in person results and are not eligible for age-group or overall awards.
The event includes a weather policy that may postpone or cancel races for safety. The registration policy specifies no refunds, deferrals, race credits, or entry transfers. Visit the organization's website for the most recent information.
