Community Info

Thank you for visiting the Mammoth Half Marathon Community Information page. The Mammoth Half Marathon & 5K is a nonprofit 501(c)(3) organization whose net proceeds support community service projects and charities in Mammoth Lakes.

Spectator Guide
Visit our online Spectator Guide!


Please note the road closure and detour information for our 2015 event: Road Closure Notification

You’re Invited!

We’d like to invite you to show your community spirit and cheer on the runners as they travel through Mammoth Lakes – for a course map, please visit: Course. We also invite you to join us on Saturday, June 20th for the FREE Sport, Health, and Fitness Expo at the Village Lodge from 12 pm to 8 pm, and on Sunday, June 21st for the Celebrate Mammoth Lakes Block Party.

Getting Involved

Support your community by sponsoring or volunteering for the race:


If you have any further questions about community information, please contact us at: