Course
Repeated 14.35-mile singletrack loops on the Wolf River trails in Memphis, with low elevation gain and a shared start/finish village where crews set up between laps. The 100 miler runs seven loops, the 100K four plus a starter loop, the 50K two and the 25K one.
100 Miles100 mi
100k100 km
50k50 km
25k25 km
Key dates
- !RegistrationOpen now
- ★Race dayFri 6 Nov 2026
Date confirmed with the organiser · entry window checked by RunCalendar
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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
A flat, looping ultra along Memphis's Wolf River
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