| 601 | 25 Oct 25 | Dia de los Muertos 5K | 5K | Bakersfield, CA |
| 602 | 25 Oct 25 | Fit Fall Halloween Harvest 10K/5K | 5K/10K | Huntington Beach, CA |
| 603 | 25 Oct 25 | Haunted Hills 5K, 10K Redwood City | 5K/10K | Redwood, CA |
| 604 | 25 Oct 25 | Head for the Cure 5K - San Diego | 5K | San Diego, CA |
| 605 | 25 Oct 25 | Monster Mash Dash Halloween Run | 5K | Fresno, CA |
| 606 | 25 Oct 25 | Napa Wine Country Marathon | 10K/13.1M/26.2M | Calistoga, CA |
| 607 | 25 Oct 25 | Pinkathon Challenge for Breast Cancer | 5K/10K/13.1M/26.2M/50K | San Francisco, CA |
| 608 | 25 Oct 25 | Trail Run at Sly Park | 5K/10K/8.5M/13.1M/18M/26.2M/50K | Pollock Pines, CA |
| 609 | 25 Oct 25 | Twilight's Last Gleaming Cross Country Challenge | 4M | Ventura, CA |
| 610 | 25 Oct 25 | Copy of Victor Valley Bicycle Tour 2025 event | 10 Mile | Apple Valley, CA |
| 611 | 25 Oct 25 | Big Sur River Run | 10K/1M | Big Sur, CA |
| 612 | 25 Oct 25 | Monster Dash 5k, 10k, 15k, Half Marathon | 5K/10K/15K | Long Beach, CA |
| 613 | 25 Oct 25 | Miles for Migraine - San Francisco | 5K | San Francisco, CA |
| 614 | 25 Oct 25 | Monster Dash | 5K/10K/15K/13.1M | Long Beach, CA |
| 615 | 25 Oct 25 | Monster Dash Half Marathon | 5K/10K/15K/13.1M | Santa Monica, CA |