| 16891 | 04 Jul 26 | July 4th ROCK-IT Run | 5K/13.1M | Castle Rock, CO |
| 16892 | 03 Oct 26 | Castle Rock Trail Festival | 5K/10K/13.1M/50K | Castle Rock, CO |
| 16893 | 13 Sep 26 | Glen Iris 5K and 10K Trail Run | 5K/10K | Castile, NY |
| 16894 | 18 Jul 26 | Castalia Cold Creek 5K | 5K | Castalia, OH |
| 16895 | 20 Jun 26 | Cal Tri Castaic Lake | 5K/10K | Castaic, CA |
| 16896 | 20 Jun 26 | 2026 Cal Tri Castaic Lake | triathlon | Castaic, CA |
| 16897 | 09 Oct 26 | Heartland | 125M | Cassoday, KS |
| 16898 | 26 Sep 26 | Battle of the Bands 5K | 5K | Casselberry, FL |
| 16899 | 05 Sep 26 | CassadagaMan | Olympic Triathlon/Olympic Triathlon Relay/halfiron | Cassadaga, NY |
| 16900 | 15 Aug 26 | Cassadaga Kids Triathlon | youth triathlon | Cassadaga, NY |
| 16901 | 06 Feb 27 | Frozen 50K | 50K | Cassadaga, NY |
| 16902 | 03 Jun 26 | 2026 Southern Tier Triathlon Club (STTC) Summer Tri Series #1 | triathlon | Cassadaga, NY |
| 16903 | 16 May 26 | Step Up for Kids 5K | 5K | Cassadaga, NY |
| 16904 | 05 Aug 26 | Southern Tier Triathlon Club Summer Tri Series | supersprint triathlon | Cassadaga, NY |
| 16905 | 03 Jun 26 | Southern Tier Triathlon Club Summer Tri Series | supersprint triathlon | Cassadaga, NY |