Ultra Running Hub Memphis, TN, United States · Friday, November 6, 2026
Fixed Distance 50K
Mamba 50 Km
31 days away
50 km Distance
not publishedn/a Climbing
2.5 est Grit · Entry level
Calculated from 50 km alone — the organiser has not published an elevation profile. Read 2.5 as a floor, not a verdict.
What the course asks
Field size ~84 Mid-sized. Company early, well spread out by halfway.
DUV results for the 2025 edition (50km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.
Typical conditions, November
Daytime high 16°C
Night low 4°C
Rainfall Showers likely
Daylight 10 h 37 m of light
Regional 2001-2020 average for November — NASA POWER, grid elevation 87 m. Not a forecast.
Results history
| Year | Race | Finishers | Men's winner | Women's winner |
|---|---|---|---|---|
| 2025 | 50km | 84 | Connor Chapdelaine · 04:05:01 | Brittany Loy · 05:05:26 |
| 2024 | 50km | 79 | John Swearingen · 04:23:59 | Amy Berkman · 04:36:27 |
| 2023 | 50km | 67 | Brian Matochik · 04:34:16 | Katie Burke · 05:23:07 |
The field grew 6% between 2024 (79) and 2025 (84). 43% of the 2025 field were women.
DUV results for the 2025 edition (50km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.
Course notes
- gear With trail terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for 50 km of trail.
- Trail Running Shoes 50 km of trail — cushioning that is still there in the last quarter.
- Race Nutrition 50 km of self-supported fuelling between aid stations.
- Hydration Vests Flask capacity for 50 km, without the bounce.
- GPS Watches Battery life first — a 50 km day outlasts most full-GPS modes.
Similar races
Other 50K trail ultras, closest in distance first.