Fastest course in the west.


Be A Part Of It!

The California International Marathon would not be possible without the efforts of thousands of volunteers who generously donate their time, effort, and enthusiasm to help make this race a success every year! Want to help inspire over 14,000 runners in one day? Want to join your community? Looking for a fun group project? Want to be a part of CIM? VOLUNTEER!

There are 2 ways to volunteer: (currently closed)

As an Individual As a Group
Individual volunteer signups are closed for 2015. Thank you for your interest and support! Gather your friends, school group, co workers, church or family and volunteer together! Have 6 or more people, click here to register!