| 376 | 24 Oct 25 | 2025 Alpha Win Napa Valley - FALL | triathlon | Napa, CA |
| 377 | 24 Oct 25 | Ragnar Trail SoCal | 120M | Warner Springs, CA |
| 378 | 25 Oct 25 | 2025 Oakland Tri Club Youth Splash & Dash . . | triathlon | Oakland, CA |
| 379 | 25 Oct 25 | Haunted Hills 5K, 10K Redwood City | 10K/5K | Redwood City, CA |
| 380 | 25 Oct 25 | 310K | 5K | Santa Monica, CA |
| 381 | 25 Oct 25 | CASA of Kern County Superhero Run | 2K/5K/10K | Bakersfield, CA |
| 382 | 25 Oct 25 | Dia de los Muertos 5K | 5K | Bakersfield, CA |
| 383 | 25 Oct 25 | Fit Fall Halloween Harvest 10K/5K | 5K/10K | Huntington Beach, CA |
| 384 | 25 Oct 25 | Haunted Hills 5K, 10K Redwood City | 5K/10K | Redwood, CA |
| 385 | 25 Oct 25 | Head for the Cure 5K - San Diego | 5K | San Diego, CA |
| 386 | 25 Oct 25 | Monster Mash Dash Halloween Run | 5K | Fresno, CA |
| 387 | 25 Oct 25 | Napa Wine Country Marathon | 10K/13.1M/26.2M | Calistoga, CA |
| 388 | 25 Oct 25 | Pinkathon Challenge for Breast Cancer | 5K/10K/13.1M/26.2M/50K | San Francisco, CA |
| 389 | 25 Oct 25 | Trail Run at Sly Park | 5K/10K/8.5M/13.1M/18M/26.2M/50K | Pollock Pines, CA |
| 390 | 25 Oct 25 | Twilight's Last Gleaming Cross Country Challenge | 4M | Ventura, CA |