Mammoth TUFF

Date
Saturday 13.09.2025
Distances
113 - 145 km
City
Mammoth Lakes, CA
Country
United States of America
Website Contact

Mammoth TUFF is a new event in California (USA) that was organised for the first time in 2019 by David Sheek and Amanda Nauman, double winner of Unbound.

Course

The 2025 courses of the event will be finalised and released a few weeks ahead.  Below are the 2024 details.

There are three distances : 40-70-90 miles from which the short distance isn’t a qualifier distance for the UCI Gravel World Championships.  The 70 miles counts as qualifier for the men over 60 and women over 50 while the 90 miles is the official qualifier distance for all younger categories.

In the 90 miles course, riders head out of Mammoth Lakes on a paved section for the first 5 miles, followed by a first gravel section (miles 5-16) and a second paved section (miles 16-31) to go east to the lowest point on course.  The second half back to the finish with also a mix of gravel and asphalt.

63% of the course is gravel, 37% paved.

The shorter 70miles course is skipping the eastern part of the course but also has some different tracks in the beginning.

90 miles (qualifier men 19-59 and women 19-49)
70 miles (qualifier men 60+ and women 50+)
6
5
4
3
2
1

Profile

With a total elevation of 7410 feet (2250m), it’s a challenging course on a rough terrain with some steep climbs.

The hardest part of the course comes right after the halfway point where riders start a 16 miles climb at 4.3% average with especially the narrow Red Rock Canyon climb between 52-54 miles.

The shorter 70 miles course has 3933 feet of elevation which is bypassing the hard eastern part of the long course.

MAMMOTH LAKES

Nestled amidst the majestic Sierra Nevada mountains in California, Mammoth Lakes reigns supreme as the sole incorporated town within Mono County. Sitting at a cool 7,880 feet (2,400 meters) above sea level, just east of the towering Mammoth Mountain, the town offers a unique climate and a plethora of outdoor activities for all seasons.

Four Seasons of Adventure:

  • Winter Wonderland: Embrace the snow! Mammoth Lakes transforms into a winter wonderland with long, snowy seasons perfect for skiing, snowboarding, and carving fresh tracks down Mammoth Mountain’s legendary slopes. For a less intense winter experience, enjoy tubing, sledding, or ice skating.
  • Summer Playground: As the snow melts, Mammoth Lakes reveals a vibrant summer scene. Hike or backpack through breathtaking mountain trails, explore the surrounding Sherwin Range, or cycle scenic roads. Camping enthusiasts can pitch a tent under a star-studded sky, while anglers cast their lines in pristine lakes and rivers. Take a refreshing dip in a crystal-clear lake or explore hidden waterfalls.


High Altitude Training Haven:

Mammoth Lakes’ high altitude makes it a prime destination for long-distance runners seeking to elevate their training. The thin mountain air helps to improve endurance and lung capacity.

Yosemite’s Neighbor:

A stone’s throw away lies the world-famous Yosemite National Park, a mere 35 miles from Mammoth Lakes. Direct access from Mammoth Yosemite Airport (MMH) connects you to major hubs, making your adventure to this natural wonderland seamless.

Plan Your Mammoth Escape:

For a comprehensive guide to all that Mammoth Lakes offers, from exciting activities to cozy accommodations, visit the official tourism website: https://www.visitmammoth.com/