| Name | Team | Event Name |
|---|---|---|
| Sinead O'Sullivan | TCS New York City Marathon | |
| Sister Sally Duffy | DIY: Your TEAM, Your Way | |
| Skylar Glass | TCS New York City Marathon | |
| Skylar Groth | Bank of America Chicago Marathon | |
| Skyler Shasky | Bank of America Chicago Marathon | |
| Sloane Spurlock | TCS New York City Marathon | |
| Sofia Irlando | TCS New York City Marathon | |
| Sofia Pattillo | DIY: Your TEAM, Your Way | |
| Sondra Rose | DIY: Your TEAM, Your Way | |
| Sondra Rose | Bob's Bay Rats | Hike Yosemite |