The Mammoth - 218 mile running race
Summary
SCH Number
2026080891
Public Agency
Mono County
Document Title
The Mammoth - 218 mile running race
Document Type
NOE - Notice of Exemption
Received
Posted
8/25/2026
Document Description
The project consists of approval of a special event permit for “The Mammoth,” an approximately 218-mile ultra-marathon beginning and ending in the Town of Mammoth Lakes and circling the Long Valley Caldera. The event will occur from October 2 through October 6, 2026, with up to 250 runners and approximately 1,500 total attendees, including participants, volunteers, crew members, vendors, and spectators over the course of the event.
The project includes temporary use of existing County facilities as overnight aid stations, including the Crowley Lake Ball-field from October 2 through October 3 and the Pioneer Solar Pavilion at Gus Hess Park from October 3 through October 5. Aid stations will provide food, medical support, supplies, and temporary sleeping accommodations for participants. No permanent construction or physical alteration of County facilities is proposed.
Contact Information
Name
Sandra Moberly
Agency Name
Mono County
Job Title
County Administrative Officer
Contact Types
Lead/Public Agency
Address
Phone
Email
Name
Tim Tollefson
Agency Name
Eastern Sierra Running
Job Title
Owner
Contact Types
Project Applicant
Phone
Location
Cities
Mammoth Lakes
Counties
Mono
Regions
Countywide, Northern California, Unincorporated
Other Location Info
Town of Mammoth Lakes/Unincorporated Mono County
Various locations within Mono County. Map available online here: https://caltopo.com/m/J5NQV
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
15301 (Class 1, Existing Facilities)
Reasons for Exemption
The project is categorically exempt from CEQA pursuant to CEQA Guidelines Section 15301 (Class 1, Existing Facilities). The project consists of a temporary special event utilizing existing roads, trails, parks, and public facilities, including temporary use of the Crowley Lake Ballfield and Pioneer Solar Pavilion at Gus Hess Park as aid
stations. The project involves no permanent construction or physical alteration of existing facilities and represents negligible or no expansion of existing use.
County Clerk
Mono
Attachments
Notice of Exemption
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