| 1906 | 18 Apr 26 | Southern Door Trail Trot Run | 2M | Brussels, WI |
| 1907 | 13 Feb 26 | Southeast Georgia Health System Foundation Bridge Run 2026 | 5K/10K | Brunswick, GA |
| 1908 | 13 Feb 26 | Southeast Georgia Health System Foundation Bridge Run | 5K | Brunswick, GA |
| 1909 | 31 Jan 26 | South Texas Tower Climb and Run | 1M | San Antonio, TX |
| 1910 | 25 May 26 | South Salem Races | 5K/10K | South Salem, NY |
| 1911 | 02 May 26 | South Mountain Half Marathon | 13.1M | Sandy, UT |
| 1912 | 21 Mar 26 | South Mountain 5K, 10K | 1M/5K/10K | Valdese, NC |
| 1913 | 21 Mar 26 | South Hills Single Track Trail Run - Spring | 5K/10K/9M/13.1M/16M/26.2M/50K | San Jose, CA |
| 1914 | 20 Jun 26 | South Haven Triathlon | 25K | South Haven, MI |
| 1915 | 21 Feb 26 | South Gulf Cove CCT Furry Scurry 5K | 5K | Port Charlotte, FL |
| 1916 | 11 Jan 26 | South Germantown Park 5K/10K/15K | 5K/10K/15K | Boyds, MD |
| 1917 | 31 May 26 | South Fork Sampler: A Multisport Adventure Race | 3H adventure race/5H | Cramerton, NC |
| 1918 | 27 May 26 | South Fork Duathlon | Sprint Duathlon | Whitehouse, OH |
| 1919 | 30 May 26 | South Fayette Glow Run | 1M/5K | McDonald, PA |
| 1920 | 30 May 26 | South Fayette Glow Run | 1M/5K | McDonald, PA |