| Name | Team | Event Name |
|---|---|---|
| Isabella Spitznagle | Isabella and Olivia | Bank of America Chicago Marathon |
| Issa Suarez | Bank of America Chicago Marathon | |
| Ivana Videlefsky | Dynamite Runners | Bank of America Chicago Marathon |
| Izzy Kildee | Bank of America Chicago Marathon | |
| J. Will Miller | TCS New York City Marathon | |
| J.M. Jardina | Melissa Jardina | Walt Disney World Marathon Weekend |
| Jacalyn Hagar | Bank of America Chicago Marathon | |
| Jace Erickson | Pop's Warriors | Walt Disney World Marathon Weekend |
| Jack Aneser | Aneser Brothers | NYC Marathon 2026 | TCS New York City Marathon |
| Jack Forman | Bank of America Chicago Marathon |