| 826 | 23 Oct 26 | Ragnar Trail SoCal | 120M | Warner Springs, CA |
| 827 | 24 Oct 26 | Haunted Corner 5K, 10K Pleasant Hill | 10K/5K | Pleasant Hill, CA |
| 828 | 24 Oct 26 | 2026 Night Nation Run - Sacramento, CA | 5K | Sacramento, CA |
| 829 | 24 Oct 26 | Big Sur River Run | 10K/5K | Big Sur, CA |
| 830 | 24 Oct 26 | Trail Run at Sly Park | 5K/10K/8.5M/13.1M/18M/26.2M/50K | Pollock Pines, CA |
| 831 | 24 Oct 26 | SoCal's Sunset Trick or Trot 5K/10K - Halloween Race | 5K/10K | Huntington Beach, CA |
| 832 | 24 Oct 26 | RunThrough USA Long Beach Half Marathon Race | 5K/10K/13.1M | Long Beach, CA |
| 833 | 24 Oct 26 | Napa Wine Country Marathon | 10K/13.1M/26.2M | Calistoga, CA |
| 834 | 24 Oct 26 | Monster Mash Dash Halloween Run | 5K | Fresno, CA |
| 835 | 24 Oct 26 | Monster Dash Half Marathon | 5K/10K/15K/13.1M | Long Beach, CA |
| 836 | 24 Oct 26 | Miles for Migraine - San Francisco | 5K | San Francisco, CA |
| 837 | 24 Oct 26 | Island View Endurance Run | 12K/25K/50K/100K | Goleta, CA |
| 838 | 24 Oct 26 | Dia de los Muertos Half Marathon | 5K/13.1M | Bakersfield, CA |
| 839 | 24 Oct 26 | Oakland Hills Trail Run | 10K/13.1M/35K | Oakland, CA |
| 840 | 25 Oct 26 | Finish The Ride and Finish The Run Santa Clarita | 10K/1M/5K/Bike or Cycling | Santa Clarita, CA |