| 15151 | 30 Aug 25 | 2025 Southern Hills Triathlon | triathlon | Hot Springs, SD |
| 15152 | 26 Jul 25 | 2025 South Suburban Tryathlon - Cook Creek . . | triathlon | Lone Tree, CO |
| 15153 | 28 Sep 25 | 2025 South Padre Island Triathlon - SEPTEMBER | triathlon | South Padre Island, TX |
| 15154 | 01 Nov 25 | 2025 South Padre Island Muzicians Run 5k/10k | 5K/10K | South Padre Island, TX |
| 15155 | 01 Sep 25 | 2025 South Davis Labor Day Triathlon | triathlon | Bountiful, UT |
| 15156 | 19 Jul 25 | 2025 Sourdough Triathlon | triathlon | Chatanika, AK |
| 15157 | 27 Jul 25 | 2025 Solana Beach Triathlon, Duathlon, Aquabike, & Aquathlon | triathlon | Solana Beach, CA |
| 15158 | 27 Jul 25 | 2025 Solana Beach Triathlon & Duathlon and San Diego Tri Series 5K | 5K | Solana Beach, CA |
| 15159 | 13 Sep 25 | 2025 Soggy Seals Sprint Triathlon | triathlon | Huntsville, AL |
| 15160 | 02 Aug 25 | 2025 Socorro Chile Harvest Triathlon (Saturday Sprint) | triathlon | Socorro, NM |
| 15161 | 11 Oct 25 | 2025 SMWL Monster Mash 5k | 5K | White Plains, MD |
| 15162 | 03 Aug 25 | 2025 Smith Point Sprint Triathlon . . | triathlon | Shirley, NY |
| 15163 | 05 Sep 25 | 2025 Smith Mountain Lake Ultra Triathlon | triathlon | Huddleston, VA |
| 15164 | 07 Dec 25 | 2025 Sleigh Bell Strider 5k/10k | 10K/5K | Arlington, VA |
| 15165 | 09 Nov 25 | 2025 Silver Strand Veteran's Day Half Marathon, 10 Miler, 12K & 5K event | 5K | Coronado, CA |