• Disneyland 1/2 Marathon, 10k, 5k
• Tinker Bell 1/2 Marathon, 10k, 5k
• garbage Super Heroes 1/2 Marathon, 10k, 5k

• Santa Anita Derby Day 5K [1]

• Hernia Hill 1/2 Marathon, 10K, 5K

• Big Sur International Marathon [2]

• Carlsbad 5000

• Way Too Cool 50K

• Fleet Feet Davis Mile
• Fleet Feet Labor Day Races 10K, 5K
• Davis Stampede 1/2 Marathon, 10K, 5K
• Davis Turkey Trot 10K, 5K

• Badwater Ultramarathon
• Death Valley Trail Marathon, 30K

• Nutrition Fuels Fitness 10K, 5K

• Two Cities Marathon & Half, Ultra, and Relay [3]

• Rio Del Lago 100 Mile [4]

• Surf City Marathon (formerly Pacific Shoreline) [5]

• Idyllwild 5K/10K Run and Fitness Walk [6]

• Jet Blue Long Beach Marathon.^[1]

• Los Angeles Marathon
• Angeles Crest 100 Mile Endurance Run
• Bell-Jeff Invitational
• Palos Verdes Marathon [7]
• New Year's Race 1/2 Marathon, 5k
• Hollywood Half Marathon, 10k, 5k Hollywood Half Marathon Website
• Alive and Running for Suicide Prevention, 5k Alive and Running Website

• Quake & Shake 1/2 Marathon, 10K

• Old Hometown Fair 10K [8]

• O'side Turkey Trot 5 Mile and 5K [9]

• Wine Vine Run Half Marathon 5K [10]

• Redding Marathon, Relay and 5k

• Redondo Beach Super Bowl Sunday 10K/5K [11]

• California International Marathon [12]
• Paul Reese Memorial Clarksburg Country Run [13]
• Runnin’ for Rhett 10K, 5K [14]

• America's Finest City 1/2 Marathon, 5K
• Rock 'n' Roll Marathon [15]
• San Diego Mud Run [16]
• Costume Party Run - 1/2 Marathon, 5K Costume Party Run Website
• SURFING MADONNA "SAVE THE OCEAN" 1K/5K/10K ON THE BEACH RUN/WALK $22,000 PRIZE MONEY EVENT WEBSITE

Alameda County edit

Berkeley:

• Berkeley Half Marathon, 10K, 5K [17]

Castro Valley:

• Dick Collins Firetrails 50 Mile
• Eden Medical Center Run to the Lake 10K, 5K

Oakland:

• The Town's Half Marathon, 5K [18]
• Oakland Running Festival: Marathon, Half Marathon, 5K [19]

Contra Costa County edit

Danville:

• Devil Mountain Run, 5K, 10K [20]

Mount Diablo State Park:

• Mount Diablo Summer Trail Run 50K, 25K, 8K

San Ramon:

• Primo's Run for Education Half-Marathon, 5K [21]

Walnut Creek:

• Forma Gym Turkey Trot, 5K, 10K [22]

Lafayette:

• Lafayette Reservoir Run, 5K, 10K (last Sunday in October every year)

Marin County edit

• Marin County Half Marathon, 10K & 5K
• Golden Gate Headlands Marathon, 1/2 Marathon, 7 Mile

Angel Island:

• Angel Island New Year's 8K, 16K, 25K, 50K

Mill Valley:

• Dipsea Race

Muir Beach:

• Headlands 50k

Sausalito:

• Miwok 100K Trail Race

Stinson Beach:

• Muir Woods Marathon, 25K, 7 Mile (canceled for 2021)
• Stinson Beach Marathon, 25K, 7 Mile

San Francisco edit

• Allstate Hot Chocolate 15k/5k Allstate Hot Chocolate Website
• Awesome '80s Run 5K Awesome '80s Run Website
• Across the Bay 12K [23]
• Bay to Breakers 12K [24]
• Bridge to Bridge [25]
• Coastal 5k & Festival [26]
• Embarcadero 10K
• Golden Gate Park 10K
• Kaiser Permanente San Francisco 1/2 Marathon, 5K
• King Oscar Presidio Trails Run 5K/10K
• Mermaid San Francisco 5K/10K [27]
• Mission Rock 5K
• Nike Women's Marathon [28]
• Polo Field 5K
• Run For Arctic Awareness 10K
• Run Wild (formerly Run to the Far Side) [29]
• San Francisco Marathon
• Statuto Race 8K
• Walt Stack 10K
• Windmill 10K

San Luis Obispo County edit

San Luis Obispo:

• San Luis Obispo Marathon, Half Marathon, and 5K (SLO Marathon)
• Run For Music 5k/10k (Run For Music)

Paso Robles:

• Wine Vine Run Half Marathon 5K

San Mateo County edit

Pacifica, California:

• Coastal 5k Family Fun Run & Festival http://pacresourcecenter.org/blog/?p=459

Pescadero:

• Artichoke 1/2 Marathon, 10K

San Mateo:

• President's Day Castaway 10K, 5K
• Laurel Family Fun Run, 5K Register Online

South San Francisco:

• Thanksgiving Fun Run & Stride, 5K

Santa Clara County edit

Cupertino:

• Stevens Creek 50K

Morgan Hill:

• Mushroom Mardi Gras Festival and Run (10K and 5K)[30] Saturday of Memorial Weekend May 26, 2012, [31]

Mountain View:

• Mermaid Mountain View Run 5K,10K, Half Marathon [32]
• Human Race 10K, 5K (cancelled as of 2009) [33]

Palo Alto:

• Moonlight Run [34]
• Skyline Ridge 1/2 Marathon, 10K

San Jose:

• Quicksilver 50 Mile, 50K, 25K [35]
• Silicon Valley Turkey Trot

Sonoma County edit

Jenner:

• Salt Point 50K, 26K, 11K [36]

• Santa Clarita Marathon, Half Marathon, and 5k [37]
• College of the Canyons Cross Country Summer Series [38]
• Independence Day 5k [39]
• Fight It! 5k [40]

• Firecracker 5K/10K [41]
• Mothers Day Run/Walk for Shelter [42]
• Nisene Marks Marathon, ½ Marathon [43]
• Race Thru The Redwoods [44]
• Run by the Sea [45]
• Santa Cruz ½ Marathon, 10K [46]
• Surfer's Path 5K/10K [47]
• Surfer's Path ½ Marathon, Marathon [48]
• Surfer's Path Hang 10/5 [49]
• Superbowl Run [50]
• Turkey Trot [51]
• Wharf to Wharf [52]

• Western States Endurance Run
• Lake Tahoe Marathon, ½ Marathon, 10k, 5k[53]

• Lake Tahoe Marathon, ½ Marathon, 10k, 5k [54]

• Twilight's Last Gleaming Cross Country Challenge 4 Miles[55]

• California Running Race Calendar, RunGuides.com
• California races by month, Running in the USA