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Mamba 100 - Memphis, TN

Memphis, United States • 7-8 Nov 2025

The Mamba 100 in Memphis, TN, is a premier ultramarathon event featuring distances of 100 miles, 100K, 50K, and 25K. The race takes place on a fast, scenic 14.35-mile loop along the Wolf River, primarily on single-track trails with low elevation gain, designed for speed and fun. The event offers a vibrant, party-like atmosphere with music, food, and enthusiastic support from spectators and crew at two fully manned aid stations. It is a Western States Qualifier race with strict rules on pacing and crewing. Participants enjoy swag options like custom jackets and backpacks, and the race is known for its strong community spirit and balanced gender participation. Visit the organization's website for the most recent information.

United States Tennessee Memphis

Race information

Website Registration
100 mi
100 Miler
100 km
100k
50 km
50k
25 km
25k
Visit the organization's website for the most recent information.
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