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Washington island ultra

experience washington island

New WEBSITE UNDER CONSTRUCTION

Many links are not active - We're working hard to get races open and

introduce our team, ambassadors, store and much more.

HOW WE GOT HERE

the story behind mammoth

Craig Braun | Owner

MAMMOTH  is a product of hard times, a desire to be a better person and a lifelong battle with the fact that I love endurance racing, or anything that meets you at your breaking point and then asks you to go a few more miles. 

At its core, Mammoth is an endurance racing business packed full of gritty people who don't know the word quit. We believe in taking care of each other, unwavering commitment to our own accountability, hard work and damn good races. 

If you're on the hunt for something different, look no further.

 
Image by Марьян Блан | @marjanblan

GRIND

THE

A Monthly newsletter packed full of relevant content, inspiring Stories and things you should know. 

July 29-31, 2021 • Washington Island, WI

WASHINGTON ISLAND ULTRA

BENT FORK ULTRA

August 12-14, 2021 • Whitefish, MT

BRYSON CITY ULTRA

September 16-18, 2021 • Bryson City, NC

24 HOURS OF TRIATHLON

the original

August 28-29 • Denver, CO

June 2-5, 2021 • Washington Island, WI

MAMMOTH SPRING CAMP

GOLDEN KETTLE TRAIL SERIES

May - October, 2021 • North & South Kettle Moraine Forrest, WI

October 2-3, 2021 •

MAMMOTH 100

OLD PINE ULTRA

May 29, 2021 • 

MAMMOTH WINTER CAMP

December 9-12, 2020 • Chattanooga, TN

SUPERIOR STAGE RACES

June 25-27, 2021 • Silver Bay, MN

the REAPER

October 23, 2021 • 

RACE TO BE ANNOUNCED

July 24, 2021 • 

#MAMMOTHENDURANCE

Mammoth exists solely to push people out of their comfort zone and beyond the limits previously set by your own doubts.

 

We believe in hard work, honesty, commitment and damn good races.  

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MAMMOTH signature apparel & accessories

carefully selected gear that goes the extra mile

MAMMOTH + BTTT

Official 2021 selected charity

Bigger Than The Trail is using trail running as a platform to advocate for mental health, with the mission of enriching the lives of individuals struggling with mental health.

THE STORY BEHIND OUR HAND ASSEMBLED MEDALS & AWARDS.

GRIND

THE

SIGNUP FOR OUR NEWSLETTER, "the GRIND" & GET 10% OFF ANY ITEM AT THE STORE.

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EVENTS

24 Hours of Triathlon

Bent Fork Ultra

Bryson City Ultra

Coming Soon

Golden Kettle Trail Series

the Reaper 

MAMMOTH 100

Mammoth Winter Camp

Mammoth Spring Camp

Old Pine Ultra

Superior Stage Races

Washington Island Ultra

© Mammoth Endurance 2020
Website built by Mammoth Designs

Contact MAMMOTH foor web design and website building

ABOUT

Bigger Than The Trail

Ambassador Program

Athletes

How We Got Here

Volunteer Opportunities

RACE RESULTS

225 S. Germantown Rd. 
Chattanooga, TN 37411

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