| 826 | 03 May 26 | 2026 Spring Sprint Triathlon and SD Tri Series 5K | 5K | San Diego, CA |
| 827 | 03 May 26 | 2026 Cal Tri Ventura ~ Results | triathlon | Ventura, CA |
| 828 | 03 May 26 | 2026 Spring Sprint Triathlon | triathlon | San Diego, CA |
| 829 | 03 May 26 | Avenue of the Giants Marathon | 10K/13.1M/26.2M | Arcata, CA |
| 830 | 03 May 26 | Aztec Run for Education | 5K | Oakland, CA |
| 831 | 03 May 26 | Bay Bridge Half Marathon | 13.1M | Oakland, CA |
| 832 | 03 May 26 | Beer City Half Sacramento | 1M/5K/10K/13.1M | Sacramento, CA |
| 833 | 03 May 26 | Cal Tri Ventura | 5K/10K | Ventura, CA |
| 834 | 03 May 26 | Cinco de Mile Half Marathon and Ole 5 Que | 5K/13.1M | Bakersfield, CA |
| 835 | 03 May 26 | Devil Mountain Run | 1M/5K/10K | Danville, CA |
| 836 | 03 May 26 | Empire Strides Back - May the 4th be with You | 5K/10K/13.1M | Long Beach, CA |
| 837 | 03 May 26 | Sombrero Marathon | 5K/10K/13.1M/26.2M | Santa Clarita, CA |
| 838 | 03 May 26 | Spring Sprint Triathlon Festival | Olympic/Sprint Aquathon/Sprint Duathlon/Sprint Triathlon | San Diego, CA |
| 839 | 03 May 26 | SRLA Victory 5K | 5K | Los Angeles, CA |
| 840 | 03 May 26 | Verdugo Mountains 10K Trail Run | 10K | Glendale, CA |