Mammoth Trailfest

join the waitlist! if someone withdraws the next in line will be offered a spot - you will have the option to accept or decline. if approved we also plan to start more runners in 2026 - these spots will be offered via the waitlist RESERVED SPOTS still available for adaptive, 70+, and elite athletes - please visit our website and submit the form, we will get back to you shortly From community, for community - join the soiree! we believe everyone should have room to experience the transformative power of trail running deep in California’s Eastern Sierra - home to Mammoth Lakes - you will find an inclusive large-scale event on breathtaking terrain. from world-class races and community focused events, to free live entertainment, storytelling, and great local food, mammoth trailfest. is a multi-day experience designed to increase access to trail running through opportunity, education, and trail stewardship. it is an event built by our community, for our community, right in the heart of California. on behalf of our small mountain collective in Mammoth, I welcome you and your family to mammoth trailfest. - whether racing, supporting, or spectating, enjoy this season’s end gathering of our community with inspiring stories, neighborhood grub, and miles along our favorite local trails before snow covers the Sierra. please join us. - tim + linds tollefson, head crafters at trailfest. entry includes: limited edition trailfest. swag; unique finishers medal; post race food and drink; professional live chip timing with on course splits (50K/26K); well stocked aid stations with generous cut-off times; goodies from partners; 3 day festival with activations, talks, and performances; community shakeout runs; fan zones; post race party Sunday night; bus transport to start/from finish of Dragon's Back Ascent; free town transit; additional perks/details will be announced.