| 511 | 18 Oct 26 | Mission Inn Run | 5K/10K/13.1M | Riverside, CA |
| 512 | 18 Oct 26 | Lake Hodges Off-Road Duathlon | other duathlon | San Diego, CA |
| 513 | 18 Oct 26 | Lake Evans Triathlon | 5K/10K | Bakersfield, CA |
| 514 | 18 Oct 26 | Lafayette Res Run for Education | 2M/5K/10K | Lafayette, CA |
| 515 | 18 Oct 26 | Jeepers Creepers Marathon | 5K/10K/13.1M/26.2M | Santa Clarita, CA |
| 516 | 18 Oct 26 | Ironman California | ironman triathlon | Sacramento, CA |
| 517 | 18 Oct 26 | Fresno Donut Run | 5K | Fresno, CA |
| 518 | 18 Oct 26 | Fleet Feet Fall Classic | 4M/13.1M | Chico, CA |
| 519 | 18 Oct 26 | Diplo's Run Club - San Francisco | 5K | San Francisco, CA |
| 520 | 18 Oct 26 | Cloverdale Vineyard Races | 5K/10K/13.1M | Cloverdale, CA |
| 521 | 18 Oct 26 | City Beer Runs - Standard Deviant Brewing | 5K/10K | San Francisco, CA |
| 522 | 18 Oct 26 | Beverly Hills Run of the STARS 5K | 5K | Beverly Hills, CA |
| 523 | 18 Oct 26 | City to the Sea Half Marathon | 5K/13.1M | San Luis Obispo, CA |
| 524 | 18 Oct 26 | Making Strides Against Breast Cancer of San Diego 5K Run | 5K | San Diego, CA |
| 525 | 18 Oct 26 | Making Strides Against Breast Cancer of San Diego 5K Run | 5K | San Diego, CA |