| Name | Country | Swim | Bike | Run | Finish | Div. Rank | Overall Rank |
|---|---|---|---|---|---|---|---|
| Ulloa, Cristian | CHL | 00:00:00 | 00:00:00 | 00:00:00 | 00:00:00 | -- | -- |
| Ulyanenko, Sergey | USA | 00:23:04 | 02:50:50 | 01:26:42 | 04:45:35 | 13 | 68 |
| Umansky, Alexander | USA | 00:43:06 | 02:42:50 | 01:33:29 | 05:03:10 | 25 | 154 |
| Underwood, Bonnie | USA | 00:42:37 | 03:18:29 | 02:24:22 | 06:29:37 | 39 | 913 |
| Underwood, Julian | USA | 00:00:00 | 00:00:00 | 00:00:00 | 00:00:00 | -- | -- |
| Urquidi, Henry | USA | 00:36:14 | 02:56:33 | 01:58:45 | 05:36:31 | 15 | 381 |
| Usher, Dean | CAN | 00:39:02 | 02:51:23 | 01:44:49 | 05:22:55 | 44 | 283 |
| Uster, Amanda | USA | 00:00:00 | 00:00:00 | 00:00:00 | 00:00:00 | -- | -- |