Use this calendar for planning purposes only.
Event details subject to change!
To confirm event status (sold out, cancellations, schedule changes, COVID restrictions, etc.), visit the event website link below.
Mammoth TUFF 45 Mi | 100 Mi
September 15, 2023 - September 17, 2023
An event every year that begins at 12:00 am on day third of September, repeating until September 21, 2025
Tuff (tŭf) is a general term for all consolidated pyroclastic, volcanic rocks.
Mammoth TUFF is a gravel cycling adventure through the Eastern Sierra from Mammoth Lakes through the TUFF terrain of the Long Valley Caldera.
The name, Mammoth TUFF, is a nod to the Long Valley Caldera and the volcanic stone that defines ‘gravel’ in the area. The caldera was formed about 760,000 years ago in a volcanic eruption from which the magma still underlies it, heating underground water and fueling hot springs the event will ride by.
Prepare to be transported back in time on routes used by miners and even further back.
The short course is around 45 miles with 2,000 feet of climbing and will circle the famous caldera.
The long course is around 100 miles with 8,000 feet of elevation gain and travels through the Volcanic Tableland formed by the Long Valley Caldera.
Shakeout Ride, Registration, and Rider Meeting
Event Day – Short and Long Courses
-Join the Oktoberfest when done
TUFF Awards and Survivors Morning Mingle
To confirm event status (sold out, cancellations, COVID restrictions, etc.), be sure to visit the event website above.