Date
Fri, 6 Nov 2026
Start
07:00
Venue
Wolf River Refuge Trailhead, S
New York, New York
Countdown
November
A flat, looped 100 miles where the challenge is time on your feet, not hills. You run through the night and have 34 hours to finish.
Key facts
0134-hour cut-off
02Overnight running, so bring a headlamp
03Minimum age 18
Create a free training plan for the Mamba 100 161 km
7-day free trial, no card required
The course
One lap, on repeat
New York · one lap
Distance161km
Total climb89m
Start · finishOne lap · elevation
0 kmDrag map to rotate22.2 km
Weather
Early-November, New York
14°CTypical high
8°CTypical low
-1°CColdest in 20 years
26%Days with rain
Highs around 14°C and lows around 8°C, but it has dropped to -1°C. Rain on 26% of days. Pack for the cold end, not the average.
NASA POWER data, 2006-2025, the week either side of race day
2025 results
Who finishes, and how
#RiderTimeAvg speed
01Erika Ashley18:43:408.6 km/h
02Jennifer Germann19:50:238.1 km/h
03Andrea Yeiter23:08:237.0 km/h
39
Women finishers
1d 4:49:48
Median time
5.6 km/h
Median speed
Women · 2025 results, as published by the organiser.
How fast could you finish?
Get a prediction based on your recent training
Organiser
OrganiserMamba Trail Runners
Websitemambatrailrunners.com
Instagram@mambatrailrunners
Running since2023
Training
Training for the Mamba 100 161 km
We don't do generic plans. We combine deep knowledge of this race's demands with your recent training, then build a plan with you that progresses as you do.
Beina integrates directly with your existing tools to understand your current fitness, and synchronise your planned sessions.
Intervals.icuWhat a Mamba 100 161 km plan targets
Typical sessions
161 km with 89 m of climbing
Time on feet and fatigue resistance
Fuelling and pacing for the whole event
What your weeks look like
Typical sessions
Long runs that build time on your feet
Tempo and threshold sessions to hold race pace
Back-to-back weekend runs for fatigue resistance
Not a generic schedule
Typical sessions
Built from your current fitness and the time you actually have
Adapts every week as Beina learns how you respond
Syncs your sessions straight to Garmin and Wahoo
One clear next session, never a wall of spreadsheet
Entries open now
Get your Mamba 100 161 km plan.
7-day free trial, no card required.
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