At a glance
- Date
- Oct 23, 2027
- Location
- Eads, Tennessee
- Distances
- Backyard Ultra
- Registration
- See ultrasignup.com
Listed from UltraSignup. Checked Oct 19, 2026.
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Build my planAbout this race
The Mamba 100 is a Western States Qualifying ultra held on the Wolf River singletrack in Memphis, TN, featuring a 14-mile flat, fast loop course. Distances include 100 Mile, 100K, 50K, and 25K, with world-class photography, fully stocked aid stations, and custom buckles and medals.
Key dates
Race day
Oct 23, 2027
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Race planning
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