William Whittier has 2 recorded races from Clarendon Hills, Illinois, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2024-08-24 | 2024 Chicago Triathlon International | Ultra Marathon | 3:06:53 | 1083 |
| 2023-08-27 | 2023 Chicago Triathlon International | Ultra Marathon | 2:36:08 | 1544 |