| 781 | 19 Dec 26 | Winter Whirl 5K, 10K, 10 Miler, Half Marathon | 5K/10K/13.1M | Fountain Valley, CA |
| 782 | 19 Dec 26 | Santa Beer Run | 1M | Exeter, CA |
| 783 | 20 Dec 26 | Santa's Reindeer Run | 1M/5K/10K | Huntington Beach, CA |
| 784 | 20 Dec 26 | Holly Jolly Marathon | 5K/10K/13.1M/26.2M | Camarillo, CA |
| 785 | 20 Dec 26 | Dirty December Trail Run | 10K/13.1M/26.2M | San Diego, CA |
| 786 | 20 Dec 26 | Reindeer Run LB Half Marathon | 5K/10K/15K/13.1M | Long Beach, CA |
| 787 | 20 Dec 26 | Rainbow Falls 5K | 5K | San Francisco, CA |
| 788 | 24 Dec 26 | Placerville's Holiday Jingle and Mingle Run | 1M/5K/10K/15K/13.1M | Placerville, CA |
| 789 | 25 Dec 26 | Jingle All the Way - Christmas Day | 5K/10K/13.1M | Long Beach, CA |
| 790 | 26 Dec 26 | Ring Out the Old 5K, 10K, and Half Marathon | 5K/10K/13.1M | Los Angeles, CA |
| 791 | 26 Dec 26 | Happy Holidays Half Marathon | 5K/10K/15K/13.1M | Long Beach, CA |
| 792 | 27 Dec 26 | Stern Grove 4M | 4M | San Francisco, CA |
| 793 | 30 Dec 26 | Havi | Triathlon | Anaheim, CA |
| 794 | 31 Dec 26 | New Year's One Day | 100m/12H/24H/6H relay/6H run | San Jose, CA |
| 795 | 31 Dec 26 | Last Dash Before Midnight 5K, 10K, and Half Marathon | 5K/10K/13.1M | Long Beach, CA |