How to read it: in each row, the time under "Top 10%" is the time of the slowest athlete who still made the fastest 10% of the age group. Beat that time and you are in. Age groups with fewer than 5 finishers are omitted. Finishers only.
Men
| Age group | Finishers | Top 1% | Top 5% | Top 10% | Top 20% | Median | Best |
|---|---|---|---|---|---|---|---|
| All age groups | 128 | 4:50:58 | 5:09:59 | 5:21:00 | 5:41:12 | 6:32:08 | 4:41:07 |
| M18-24 | 5 | 5:15:39 | 5:15:39 | 5:15:39 | 5:15:39 | 6:13:37 | 5:15:39 |
| M25-29 | 14 | 5:08:51 | 5:08:51 | 5:09:59 | 5:20:54 | 6:18:53 | 5:08:51 |
| M30-34 | 17 | 5:06:10 | 5:06:10 | 5:35:08 | 5:53:10 | 6:23:02 | 5:06:10 |
| M35-39 | 19 | 4:52:38 | 4:52:38 | 5:18:53 | 5:22:05 | 6:04:36 | 4:52:38 |
| M40-44 | 23 | 4:41:07 | 5:08:39 | 5:10:08 | 5:32:45 | 6:01:22 | 4:41:07 |
| M45-49 | 15 | 4:50:58 | 4:50:58 | 5:30:28 | 5:32:45 | 6:22:47 | 4:50:58 |
| M50-54 | 15 | 6:12:50 | 6:12:50 | 6:17:58 | 6:35:14 | 7:23:13 | 6:12:50 |
| M55-59 | 13 | 6:18:22 | 6:18:22 | 6:22:43 | 6:23:06 | 7:19:20 | 6:18:22 |
Women
| Age group | Finishers | Top 1% | Top 5% | Top 10% | Top 20% | Median | Best |
|---|---|---|---|---|---|---|---|
| All age groups | 33 | 5:28:59 | 5:54:31 | 6:04:39 | 6:12:38 | 6:51:59 | 5:28:59 |
| F30-34 | 5 | 6:11:10 | 6:11:10 | 6:11:10 | 6:11:10 | 6:42:15 | 6:11:10 |
| F35-39 | 5 | 6:54:14 | 6:54:14 | 6:54:14 | 6:54:14 | 7:17:53 | 6:54:14 |
| F40-44 | 8 | 5:54:31 | 5:54:31 | 5:54:31 | 5:56:22 | 6:46:57 | 5:54:31 |
Source: Seffrin A., Nikolaidis P.T., Andrade M.S., Villiger E., Rosemann T., Weiss K., Ferreira D., Knechtle B. (2026). A dataset of 3.6 million IRONMAN triathlon records with transition times (2002-2026), v4.0.0. Zenodo. CC BY 4.0. doi:10.5281/zenodo.23421027.