Mamba 100

Western States Qualifier Race

Mamba 100 miler is a Western States Qualifying Race. If you finish the 100-mile distance under the 34-hour time limit, then you will qualify for Western States 100.


Mamba 100 in 2024 was a huge success as we are so excited to have it again in 2025. If you are looking to PR your 100 miler or run a sub-24 hour, then this race is perfect for you. It's also a race for a first time 100 miler, or any distance. All race distances will end at 5:00 pm on Saturday Nov. 8th. That's 34 hours to finish the 100 miler, 22 hours to finish the 100k, 10 hours to finish the 50k, and 8 hours to finish the 25k. You must finish by 5:00 pm on Nov. 8th to earn your buckle or medal. With very little elevation gain this race will be fast and fun. The race will be mostly on single track trails with half the loop running right along the Wolf River. The course will be a looped course at 14.35 miles long. 7 loops for the 100 miler. 4 loops for the 100k (with a shorter loop at the start), 2 loops for the 50k, and 1 loop for the 25k.

The Mamba 100 is the perfect race for your crew to setup their canopy tent and hang out at the Start/Finish line. After each loop you'll be welcomed by good music and great food and a mild-like party atmosphere. There will be a ton of canopy tents lined up along the race route as you finish each loop. You'll be welcomed by many people cheering you on as you run your race. This race has so much going on at all times that you'll be guaranteed to have a great time.

Upcoming Races

Nov 6 2026
50 KM
Multiple Loop
2 Elevation Rating
Rolling, ~2500 feet in 50 miles
2 Surface Rating
Mostly groomed trail or dirt roads
Nov 6 2026
100 KM
Multiple Loop
2 Elevation Rating
Rolling, ~2500 feet in 50 miles
2 Surface Rating
Mostly groomed trail or dirt roads
Nov 6 2026
100 Miles
Multiple Loop
2 Elevation Rating
Rolling, ~2500 feet in 50 miles
2 Surface Rating
Mostly groomed trail or dirt roads

Additional Distances

This event also has the following sub ultra distances

25 KM

Results

Date Finishers Top Result (F) Top Result (M)
11/08/25 84 5:05:26 4:05:01
11/09/24 79 4:36:27 4:23:59
11/03/23 67 5:23:07 4:34:16
Date Finishers Top Result (F) Top Result (M)
11/07/25 109 18:43:40 18:15:48
11/08/24 102 20:35:29 17:17:47
11/03/23 55 20:08:05 18:42:14
Date Finishers Top Result (F) Top Result (M)
11/07/25 37 13:17:54 13:15:42
11/08/24 37 14:09:37 11:15:06
11/03/23 25 10:33:30 12:15:08

Weekly Newsletter

A roundup of the week's content and most recent race results. Sent once a week on Thursday.

Recent Results

Lake Tye Challenge
Monroe, WA - 25 finishers
12 Hours | 6 Hours
Cinderella Trail - Spring
Oakland, CA - 28 finishers
50 KM
Infinitus
Ripton, VT - 36 finishers
100 Miles | 88 KM
Smith Rock Classic
Terrebonne, OR - 185 finishers
50 Miles | 50 KM
MCW The Tatum Classic
Middletown Township, NJ - 16 finishers
50 KM
The Midwest Ultra Track Classic
Warrensburg, MO - 19 finishers
24 Hours | 12 Hours | 6 Hours
The Full Mo
Sheridan, IN - 190 finishers
50 KM
Chesterfield Gorge Ultra
West Chesterfield, MA - 120 finishers
100 Miles | 100 KM | 50 Miles | 50 KM
Mohican Trail Run
Loudonville, OH - 251 finishers
100 Miles | 50 Miles
View All Results