| Event: | Triathlon |
| Games: | 2005 |
| Venue: | Boardwalk |
| Location: | Subic Bay Freeport Zone, Olongapo City, Zambales |
| Date: | December 1–2 |
| Next: | 2007 |
The Triathlon at the 2005 SEA Games was held at the Boardwalk, Subic Bay Freeport Zone, Zambales, Philippines on December 1 and 2. The participants are competing for individual gold medals in the men's and women's events.
The SEA Games distances for the three disciplines are:
Swimming - 1500 m
Road cycling - 40 km
Road running - 10 km
The events will run in sequence, so that the person who crossed the line in first place at the end of the run is declared the winner.
| Men | ||||
| Women |
| data-sort-type="number" | Rank | Triathlete | Swimming | Cycling | Running | Total time | |
|---|---|---|---|---|---|---|---|
| 5 | 0:19:04.02 | 1:10:36.89 | 0:44:58.69 | 2:14:39.60 | |||
| 6 | 0:22:40.52 | 1:09:35.47 | 0:43:43.88 | 2:15:59.87 | |||
| 3 | 0:22:44.49 | 1:15:34.02 | 0:43:38.98 | 2:21:57.49 | |||
| 4 | 4 | 0:22:39.32 | 1:09:38.01 | 0:53:00.08 | 2:25:17.41 | ||
| 5 | 2 | 0:22:42.32 | 1:12:25.31 | 0:50:32.53 | 2:25:40.16 | ||
| 6 | 1 | 0:22:49.33 | 1:15:31.19 | 0:51:07.84 | 2:29:28.36 |
| data-sort-type="number" | Rank | Triathlete | Swimming | Cycling | Running | Total time | |
|---|---|---|---|---|---|---|---|
| 4 | 0:18:33.91 | 1:02:02.28 | 0:38:04.95 | 1:58:41.14 | |||
| 6 | 0:20:33.07 | 1:04:47.62 | 0:36:51.94 | 2:02:12.63 | |||
| 9 | 0:20:43.84 | 1:04:26.38 | 0:39:20.18 | 2:04:30.40 | |||
| 4 | 2 | 0:20:36.79 | 1:04:38.85 | 0:40:26.54 | 2:05:42.18 | ||
| 5 | 8 | 0:20:34.13 | 1:04:04.06 | 0:41:34.31 | 2:06:12.50 | ||
| 6 | 1 | 0:25:45.95 | 1:06:01.33 | 0:36:26.09 | 2:08:13.37 | ||
| 7 | 7 | 0:23:27.56 | 1:08:02.80 | 0:40:59.55 | 2:12:29.91 | ||
| 8 | 5 | 0:20:41.56 | 1:11:01.02 | 0:51:23.50 | 2:23:06.08 | ||
| 9 | 3 | 0:20:42.60 | 1:15:17.52 | 0:58:36.62 | 2:34:36.74 |