California Half Marathons by Date • By City
Browse all 2021 California half marathons by month below. For each race, you’ll find course maps, elevation profiles, runner reviews, and how to sign up.
When you view a race, you’ll also find contact info if you’re having problems with your registration or need to contact the race directors.
January 2021
| Fri Jan 1 | Clikapudi Trail Runs Half Marathon 10K & 5K | Redding CA |
| Sat Jan 2 | Happy New Year Half Marathon 15K 10K & 5K | Long Beach CA |
| Sat Jan 2 | Run in the New Year Half Marathon 10K & 5K | Huntington Beach CA |
| Sun Jan 3 | New Year's Celebration Half Marathon 15K 10K & 5K | Santa Monica CA |
| Sun Jan 10 | Del Dios Half Marathon 10K & 5K | Escondido CA |
| Sat Jan 23 | Winter Break Half Marathon 15K 10K & 5K | Long Beach CA |
| Sun Jan 24 | Winter Dash Half Marathon 15K 10K & 5K | Santa Monica CA |
| Sat Jan 30 | Ocean Breeze Half Marathon 15K 10K & 5K | Long Beach CA |
| Sun Jan 31 | Ocean Breeze Half Marathon 15K 10K & 5K | Santa Monica CA |
February 2021
| Sat Feb 6 | Beach Dash Half Marathon 15K 10K & 5K | Long Beach CA |
| Sun Feb 7 | Beach Dash Half Marathon 15K 10K & 5K | Santa Monica CA |
| Sat Feb 27 | The Lost Trail Half Marathon & 5K | Granite Bay CA |
March 2021
| Sat Mar 20 | Venice Booty Boot Camp Half Marathon & 5K | Santa Monica CA |
| Sun Mar 21 | Tesoro Viejo Spring Classic Half Marathon 10K & 5K | Madera CA |
| Sun Mar 21 | Whiskey Hill Redwood Run | Woodside CA |
| Sat Mar 27 | Valencia Trail Race Half Marathon 50K & 10K | Santa Clarita CA |
April 2021
| Sun Apr 4 | Artichoke Half Marathon 10K & 5K | Pescadero CA |
| Sat Apr 10 | Romancing the Island Half Marathon & 10K | Angel Island SP CA |
| Sun Apr 11 | San Luis Obispo Spartan Trail Half Marathon 50K & 10K | Santa Margarita CA |
| Sat Apr 17 | Napa Valley Endurance Run | Calistoga CA |
| Sat Apr 17 | Rodeo Beach Rumble Half Marathon 30K & 8K | Sausalito CA |
| Sat Apr 17 | San Diego Beach and Bay Half Marathon 10K & 5K | San Diego CA |
| Sat Apr 24 | Mt. Tam Wild Boar Half Marathon & 10K | Big Sur CA |
May 2021
| Sun May 2 | Avenue of the Giants Marathon Half Marathon & 10K | Weott CA |
| Sun May 2 | Bay Bridge Half Marathon | Oakland CA |
| Sun May 2 | OC Marathon & Half Marathon | Newport Beach CA |
| Sat May 8 | Yosemite Half Marathon | Bass Lake CA |
| Sat May 15 | La Jolla Half Marathon & 5K | La Jolla CA |
| Sat May 29 | Armed Forces Half Marathon & 12K | Concord CA |
| Sun May 30 | Mountains 2 Beach Marathon & Half Marathon | Ventura CA |
June 2021
| Sat Jun 5 | Loco Go Big or Go Home Challenge | Butte Meadows CA |
| Sun Jun 6 | Lake Chabot Trail Challenge Half Marathon & 5K | Castro Valley CA |
| Sun Jun 6 | Rock 'n' Roll San Diego Marathon & Half Marathon | San Diego CA |
| Sun Jun 6 | Truckee Running Festival Waddle Ranch Trail Half Marathon 10K & 5K | Truckee CA |
| Sat Jun 12 | Cody Lake Sierra Trail Challenge | Kyburz CA |
| Sun Jun 13 | Squaw Valley Half Marathon & Run to Squaw 8-Miler | Olympic Valley CA |
| Sat Jun 19 | Sugar Daddy Half Marathon 10K & 5K | Santa Clarita CA |
| Sun Jun 20 | Burton Creek Trail Half Marathon 12K & 6K | Tahoe City CA |
| Sat Jun 26 | Angel Island Half Marathon & 5-Mile | Angel Island SP CA |
| Sat Jun 26 | Running with the Bears Marathon Half Marathon & 10K | Greenville CA |
July 2021
| Sat Jul 3 | Lover's Leap of Faith Trail Race | Kyburz CA |
| Sat Jul 10 | Davis Moonlight Run Half Marathon 10K & 5K | Davis CA |
| Sat Jul 17 | Oakland Redwoods Half Marathon 10K & 5K | Oakland CA |
| Sun Jul 18 | Napa to Sonoma Wine Country Half Marathon & 5K | Sonoma CA |
| Sun Jul 25 | San Francisco Marathon & Half Marathons | San Francisco CA |
| Sat Jul 31 | Truckee Half Marathon & 5K | Truckee CA |
August 2021
| Sun Aug 1 | Skyline Endurance Run 50K & Half Marathon | Castro Valley CA |
| Sun Aug 15 | America's Finest City Half Marathon & 5K | San Diego CA |
| Sat Aug 28 | Angel Island Half Marathon & 10K | Tiburon CA |
| Sun Aug 29 | Mendocino Running Festival Half Marathon & 10K | Mendocino CA |
September 2020
| Sun Sep 6 | Pier to Peak Half Marathon | Santa Barbara CA |
October 2020
November 2020
| Sat Nov 14 | Fall Showdown Half Marathon 5-Mile & 5K | El Sobrante CA |
| Sun Nov 15 | Judgment Day Half Marathon | Bakersfield CA |
| Sat Nov 21 | Santa Barbara Red Rock Half Marathon | Santa Barbara CA |
December 2020
| Sat Dec 5 | Death Valley Trail Marathon & Half Marathon | Death Valley NP CA |
| Sat Dec 12 | Hark the Herald Angels Half Marathon & 10K | Tiburon CA |
| Sat Dec 19 | San Diego Holiday Half Marathon | La Jolla CA |
