| 421 | 01 Aug 26 | 2026 Seeley Lake Challenge Triathlon/Duathlon | triathlon | Seeley Lake, MT |
| 422 | 19 Jul 26 | 2026 Semper Fi 5k/10k/1M | 10K/1M/5K | Falmouth, VA |
| 423 | 24 Oct 26 | 2026 Semper Fi 5k/Half | 13.1/5K | Washington, DC |
| 424 | 21 Jun 26 | 2026 Semper Fi Father's 5k/10k/1M | 10K/1M/5K | Lorton, VA |
| 425 | 11 Nov 26 | 2026 Service and Sacrifice 5k & Half | 13.1/5K | Washington, DC |
| 426 | 02 Aug 26 | 2026 Shawnee Mission Triathlon & Duathlon | triathlon | Shawnee, KS |
| 427 | 21 Jun 26 | 2026 She Tris Sprint Triathlon - South Charlotte | triathlon | Charlotte, NC |
| 428 | 19 Sep 26 | 2026 Shenandoah River 5k/10k/Half | 10K/13.1/5K | Bentonville, VA |
| 429 | 26 Nov 26 | 2026 Shoreline Turkey Trot 5K | 5K | West Haven, CT |
| 430 | 31 May 26 | 2026 Silver Serpent Multisport Festival - Sunday Events | triathlon | Silver Lake, NY |
| 431 | 03 Oct 26 | 2026 SMWL Monster Mash 5k | 5K | White Plains, MD |
| 432 | 24 Oct 26 | 2026 South Padre Island Muzicians Run 5k/10k | 5K/10K | South Padre Island, TX |
| 433 | 03 Jun 26 | 2026 Southern Tier Triathlon Club (STTC) Summer Tri Series #1 | triathlon | Cassadaga, NY |
| 434 | 08 Nov 26 | 2026 Southwest Series - Day 1 (NM) | 5K/10K | Farmington, NM |
| 435 | 09 Nov 26 | 2026 Southwest Series - Day 2 (CO) | 5K/10K | Durango, CO |