| 346 | 25 Oct 26 | Halloween Great Highway 5K | 5K | San Francisco, CA |
| 347 | 25 Oct 26 | Monster Dash Half Marathon | 5K/10K/15K/13.1M | Simi Valley, CA |
| 348 | 30 Oct 26 | USS Hornet Twilight 5K | 5K | Alameda, CA |
| 349 | 31 Oct 26 | Haunted Sacramento 5K, 10K | 10K/5K | Sacramento, CA |
| 350 | 31 Oct 26 | ZombieRunner Halloween | 5K/10K/13.1M/26.2M | San Jose, CA |
| 351 | 31 Oct 26 | Long Beach Halloween Run 5K. 10K. Half Marathon | 5K/10K/13.1M | Long Beach, CA |
| 352 | 31 Oct 26 | Happy Halloween Half Marathon | 5K/10K/15K/13.1M | Long Beach, CA |
| 353 | 31 Oct 26 | Dia De Los Muertos 5K Race | 5K | Sacramento, CA |
| 354 | 31 Oct 26 | Dia de los Muertos Run | 5K/10K | San Jose, CA |
| 355 | 31 Oct 26 | Anaheim Community Foundation Dia De Los Muertos 5K | 5K | Anaheim, CA |
| 356 | 31 Oct 26 | Halloween Trick or Trot Run 5K/10K/13.1 SAN FRANCISCO | 1M/5K/10K/13.1M | San Francisco, CA |
| 357 | 31 Oct 26 | Halloween Trick or Trot Run 5K/10K/13.1 SAN DIEGO | 1M/5K/10K/13.1M | San Diego, CA |
| 358 | 01 Nov 26 | Griffith Park Trail Races | 10K/13.1/30K/26.2/50K | Los Angeles, CA |
| 359 | 01 Nov 26 | Viva la Vida - Day of the Dead 5K, 10K, and Half Marathon | 5K/10K/13.1M | Long Beach, CA |
| 360 | 01 Nov 26 | Morro Bay Triathlon | Olympic/Sprint Triathlon | Morro Bay, CA |