Course
A low-elevation 14.35-mile loop on the Wolf River trails at Memphis, mostly singletrack with little climbing. The 25k is one loop, the 50k two, the 100k four plus a starter loop and the 100 miler seven, all from a shared start/finish canopy.
Key dates
- !RegistrationOpen now
- ★Race dayFri 6 Nov 2026
About
This isn't just a race—it's a movement. With a scenic, low-elevation loop along the Wolf River, a crew-friendly layout, and an electric atmosphere, the Mamba 100 delivers everything you love about ultrarunning: speed-friendly singletrack, unmatched camaraderie, awesome post-loop energy, and swag that actually slaps.
Save Mamba: 100 Miles, 100k, 50k, 25k to your season and RunCalendar reminds you the morning entries open and before they close. Free on iPhone, no account needed.
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Mamba: 100 Miles, 100k, 50k, 25k
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