| Name | Team | Event Name |
|---|---|---|
| Ian Kehler | Macquarie | United Airlines NYC Half |
| Ian Taylor | Team Taylor | Bank of America Chicago Marathon |
| Ilya Nassonov | Macquarie | United Airlines NYC Half |
| Isa Salazar | Bank of America Chicago Marathon | |
| Isa Salazar | Bloomberg | TCS New York City Marathon |
| Isabella Ferraro | United Airlines NYC Half | |
| Isabella Spitznagle | Isabella and Olivia | Bank of America Chicago Marathon |
| Islam Kadri | United Airlines NYC Half | |
| Issa Suarez | Bank of America Chicago Marathon | |
| Jacalyn Hagar | Bank of America Chicago Marathon |