| Name | Team | Event Name |
|---|---|---|
| Lety Duran | Team 209 | America's Most Beautiful Bike Ride |
| Lewis Zheng | TCS New York City Marathon | |
| Lex Goldstein | TCS New York City Marathon | |
| Lexie Rice | Will Run for Remission | Bank of America Chicago Marathon |
| Leyne Milstein | Mile 88 | America's Most Beautiful Bike Ride |
| Lia LaBrant | TCS New York City Marathon | |
| Liam Maughan | Bank of America Chicago Marathon | |
| Liam Walsh | ERM Freshwater | America's Most Beautiful Bike Ride |
| Lianne Vicchio | America's Most Beautiful Bike Ride | |
| Libby Fitzpatrick-Pena | Walt Disney World Marathon Weekend |