| Name | Country | Swim | Bike | Run | Finish | Div. Rank | Overall Rank |
|---|---|---|---|---|---|---|---|
| Iggbom, Jonas | USA | 01:31:08 | 06:33:46 | 04:52:29 | 13:14:01 | 163 | 1065 |
| Illgen, Chrissi | USA | 01:18:09 | 06:46:18 | 04:47:39 | 13:03:49 | 25 | 1020 |
| Imbertson, Mark | USA | 01:33:35 | 06:06:41 | 05:04:35 | 12:58:29 | 155 | 966 |
| Inglis-Mcquay, Carolanne | CAN | 01:22:05 | 06:11:17 | 04:34:56 | 12:21:49 | 28 | 686 |
| Ingram, Katie | USA | 01:12:03 | 06:56:41 | 05:38:43 | 14:00:01 | 58 | 1391 |
| Ip, Joanna | USA | 01:31:43 | 07:32:04 | 06:09:08 | 15:29:36 | 89 | 1867 |
| Iverson, Ivan | USA | 01:17:02 | 06:35:52 | 04:21:57 | 12:31:48 | 122 | 759 |
| Iwabuchi, Hiroshi | CAN | 01:14:01 | 05:36:14 | 03:52:45 | 10:50:36 | 4 | 195 |