Sep 22, 2023 at 8:00 AM

Mammoth Trail Fest

Mammoth Lakes CA, 93546


Event Facebook page

Entry Fee $65
(Lowest or Early Registration)

Entry Fee 2 $215
(Highest or Late Registration)

Prize Money: yes


  • 25K
  • 4K
  • 50K

Type: Ultra

Course Map: Download Map

Starting Elevation: 8050ft

High Point: 11,053ft

Percent of the course on un-paved trails: 95%

First Year of the Event: 2021


Donuts, Dirt, and Epic Trail Runs Across the Top of California! From a $17,000 prize purse and world-class ultramarathons, to a kids race, live entertainment, storytelling, and great local food, Mammoth Trail Fest is a multi-day experience designed to increase access to trail and ultrarunning through opportunity, education, and trail stewardship. We believe everyone should have the space to experience the transformative power of trail running and with the splendor of California’s Eastern Sierra – home to Mammoth Lakes – travel across the pond to experience a large-scale European-style trail event on breathtaking terrain is not necessary.

On behalf of our small mountain collective in Mammoth Lakes, I welcome you and your family to Mammoth Trail Fest. Whether racing, supporting, or spectating, enjoy this season end gathering of our global community with inspiring stories, neighborhood grub, and many miles along my favorite local trails before snow covers the Sierra. Please join us.

-Tim Tollefson, Mammoth Trail Fest Founder



Past Event Dates

Held on Sep 22, 2023

Held on Sep 23, 2022

Held on Sep 24, 2021

Event Results