| 541 | 28 Jun 26 | 2026 San Diego International Triathlon & Waterfront 5K | 5K | San Diego, CA |
| 542 | 10 Jan 26 | 2026 San Diego Resolution Run | 10K/5K | San Diego, CA |
| 543 | 28 Mar 26 | 2026 Savin Rock Marathon & Half Marathon | Half Marathon/Marathon | West Haven, CT |
| 544 | 25 Apr 26 | 2026 Seamark MudRun | 5K | Green Cove Springs, FL |
| 545 | 28 Jun 26 | 2026 Sebago Lake Triathlon | triathlon | Standish, ME |
| 546 | 01 Aug 26 | 2026 Seeley Lake Challenge Triathlon/Duathlon | triathlon | Seeley Lake, MT |
| 547 | 19 Jul 26 | 2026 Semper Fi 5k/10k/1M | 10K/1M/5K | Falmouth, VA |
| 548 | 15 Mar 26 | 2026 Shamrock Run Fest presented by Toyota | 5K/8K | Portland, OR |
| 549 | 02 Aug 26 | 2026 Shawnee Mission Triathlon & Duathlon | triathlon | Shawnee, KS |
| 550 | 16 May 26 | 2026 She Tris Sprint Triathlon - I'On Club | triathlon | Mount Pleasant, SC |
| 551 | 21 Jun 26 | 2026 She Tris Sprint Triathlon - South Charlotte | triathlon | Charlotte, NC |
| 552 | 01 Mar 26 | 2026 Shelbyville Triathlon Series - Race #1 | triathlon | Shelbyville, KY |
| 553 | 14 Feb 26 | 2026 Shelter Dog Dash 5K and 1M | 5K | Gilbert, AZ |
| 554 | 28 Mar 26 | 2026 Shoreline Sharks 3 Half Marathon Entry | Half Marathon | West Haven, CT |
| 555 | 04 Apr 26 | 2026 Silver Moon Race: Kings River | Ultra | Reedley, CA |