| 511 | 11 Oct 25 | Running with the Angels | 5K | Bakersfield, CA |
| 512 | 12 Oct 25 | The 2025 Lake Evans Triathlon | triathlon | Bakersfield, CA |
| 513 | 12 Oct 25 | 2025 Mission Bay Triathlon | triathlon | San Diego, CA |
| 514 | 12 Oct 25 | 2025 XTERRA WETSUITS Mission Bay Triathlon & San Diego 5K | 5K | San Diego, CA |
| 515 | 12 Oct 25 | City Beer Runs - Standard Deviant Brewing | 5K/10K | San Francisco, CA |
| 516 | 12 Oct 25 | Fredrick Michael Gibson Half Marathon | 5K/10K/13.1M | Simi Valley, CA |
| 517 | 12 Oct 25 | Humboldt Redwoods Marathon | 5K/13.1M/26.2M | Weott, CA |
| 518 | 12 Oct 25 | Lake Evans Triathlon | 5K/10K | Bakersfield, CA |
| 519 | 12 Oct 25 | Run for Education | 5K/10K | San Ramon, CA |
| 520 | 12 Oct 25 | Runacopia 5k, 10k, 15k, Half Marathon | 5K/10K/15K | Riverside, CA |
| 521 | 12 Oct 25 | Cindy's Race 10K/6K | 1K/6K/10K | Santa Rosa, CA |
| 522 | 12 Oct 25 | Clo Cow Half Marathon | 5K/10K/13.1M | Petaluma, CA |
| 523 | 12 Oct 25 | Gobble Ghoul and Holly Run 5K, 10K, and Half Marathon | 5K/10K/13.1M | Long Beach, CA |
| 524 | 12 Oct 25 | Runacopia Half Marathon | 5K/10K/15K/13.1M | Riverside, CA |
| 525 | 12 Oct 25 | Wicked Wave Halloween Run 5K, 10K, and Half Marathon | 5K/10K/13.1M | Huntington Beach, CA |