The Mammoth Trailfest is a premier race series based in the beautiful Mammoth Lakes, California. From September 25-27, 2026, runners will tackle challenging courses, including the iconic Dragon's Back Trail to the summit of Mammoth Mountain. This event brings together trail running enthusiasts for a weekend of competition, community, and stunning mountain views. Whether you're a seasoned athlete or a fan of the sport, Mammoth Trailfest offers an unforgettable experience in the heart of the Sierra Nevada.
What to Expect
A challenging and exciting trail running event.
Who Should Attend
Trail runners
Athletes
Sports fans
Agenda Overview
The event runs from September 25 to September 27, 2026.
Venue & Address
Dragon's Back Trail
Dragon's Back Trail Mammoth Lakes , California United States
Organizer
Mammoth Trailfest · Organization
The organization behind the Mammoth Trailfest race series.
Frequently Asked Questions
When is the event?
September 25-27, 2026.
Where is it located?
Mammoth Lakes, CA.
What is the main trail?
Dragon's Back Trail.
Is it a race series?
Yes, it is a race series.
Where can I register?
Registration is available on the official website.
Is it recurring?
Yes, it is an annual event.
Tags
Sports
Trail Running
Mammoth Lakes
California
Race
Summary
Mammoth Trailfest race series in Mammoth Lakes, CA from September 25-27, 2026.