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Mammoth Tuff
5Gravel Index · 20255th highest on the calendar

September 12-14, 2025

Mammoth Tuff

Mammoth Lakes, CA, USA · Thank Gravel It's Friday

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About this event

A UCI qualifying event for Gravel Worlds that is also open to amateurs.

*NO UCI or USA Cycling License is necessary to register, unless registering as an Elite*

Lodging

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Event details are provided by the organizer. Gravel Calendar LLC is not responsible for their accuracy. Please participate at your own risk.

On the Gravel Index

Every ranking
  • 55th highest on the calendar7,900 ft (2,408 m) · as it ran in 2025Share
    5th highest on the calendar: Mammoth Tuff, 7,900 ft (2,408 m)

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Registration

Opens
February 11, 2025
Deadline
September 10, 2025
On-site registration
No

Event organizer

Thank Gravel It's Friday

Thank Gravel It’s Friday is a free cycling community built around a simple idea: Ride Bikes. Meet People. Build Community. Born in Southern California and raised in the mountains of Colorado, TGIF brings a little surf, skate, and counterculture spirit to cycling through social rides, big backcountry adventures, and signature events like Far Out and Endless Summer. No matter what you ride, how you ride, or what you wear—you’ve got a place here. Your ride. Your rules. Thank Gravel It’s Friday. 🤙

https://thankgravelitsfriday.com

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