| 541 | 07 Jun 26 | 2026 Sager Creek Triathlon | triathlon | Siloam Springs, AR |
| 542 | 18 Apr 26 | 2026 Salomón Pico Memorial Trail Run | 10 Mile/5 Mile | Orcutt, CA |
| 543 | 07 Nov 26 | 2026 Salute the Troops 5k/10k | 10K/5K | Glenn Dale, MD |
| 544 | 28 Jun 26 | 2026 San Diego International Triathlon | triathlon | San Diego, CA |
| 545 | 28 Jun 26 | 2026 San Diego International Triathlon & Waterfront 5K | 5K | San Diego, CA |
| 546 | 09 Aug 26 | 2026 Sand & Surf 5k/10k | 10K/5K | Virginia Beach, VA |
| 547 | 12 Dec 26 | 2026 Santa Monica-Venice Christmas Run | 10K/5K | Santa Monica, CA |
| 548 | 20 Dec 26 | 2026 Santa's Sleigh 5k/Half | 13.1/5K | Washington, DC |
| 549 | 07 Jun 26 | 2026 Sarcoma Shuffle 5k/10k | 10K/5K | Silver Spring, MD |
| 550 | 25 Apr 26 | 2026 Seamark MudRun | 5K | Green Cove Springs, FL |
| 551 | 28 Jun 26 | 2026 Sebago Lake Triathlon | triathlon | Standish, ME |
| 552 | 01 Aug 26 | 2026 Seeley Lake Challenge Triathlon/Duathlon | triathlon | Seeley Lake, MT |
| 553 | 19 Jul 26 | 2026 Semper Fi 5k/10k/1M | 10K/1M/5K | Falmouth, VA |
| 554 | 24 Oct 26 | 2026 Semper Fi 5k/Half | 13.1/5K | Washington, DC |
| 555 | 21 Jun 26 | 2026 Semper Fi Father's 5k/10k/1M | 10K/1M/5K | Lorton, VA |