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 | 674 | 4:15:55 | 4:30:07 | 4:39:06 | 4:51:46 | 5:21:01 | 4:05:53 |
| M18-24 | 10 | 4:13:55 | 4:13:55 | 4:13:55 | 4:45:59 | 4:56:42 | 4:13:55 |
| M25-29 | 47 | 4:10:58 | 4:22:47 | 4:25:24 | 4:34:07 | 5:06:17 | 4:10:58 |
| M30-34 | 128 | 4:26:57 | 4:30:20 | 4:37:12 | 4:50:29 | 5:15:54 | 4:10:24 |
| M35-39 | 222 | 4:20:44 | 4:34:07 | 4:41:43 | 4:52:04 | 5:19:25 | 4:05:53 |
| M40-44 | 145 | 4:18:00 | 4:30:32 | 4:39:06 | 4:48:44 | 5:24:43 | 4:15:19 |
| M45-49 | 68 | 4:27:41 | 4:35:11 | 4:43:35 | 4:58:58 | 5:37:26 | 4:27:41 |
| M50-54 | 29 | 4:12:47 | 4:25:25 | 4:46:03 | 4:49:55 | 5:22:46 | 4:12:47 |
| M55-59 | 22 | 4:53:25 | 4:56:23 | 5:02:32 | 5:09:48 | 5:47:45 | 4:53:25 |
Women
| Age group | Finishers | Top 1% | Top 5% | Top 10% | Top 20% | Median | Best |
|---|---|---|---|---|---|---|---|
| All age groups | 142 | 4:35:48 | 4:51:24 | 5:01:17 | 5:11:49 | 5:52:20 | 4:26:06 |
| F25-29 | 11 | 4:35:48 | 4:35:48 | 4:52:43 | 5:04:12 | 5:27:55 | 4:35:48 |
| F30-34 | 41 | 4:42:19 | 4:53:33 | 5:01:50 | 5:12:13 | 5:49:00 | 4:42:19 |
| F35-39 | 36 | 4:26:06 | 4:43:05 | 4:51:24 | 5:11:20 | 5:45:18 | 4:26:06 |
| F40-44 | 25 | 4:53:31 | 4:58:08 | 5:03:13 | 5:16:30 | 6:04:41 | 4:53:31 |
| F45-49 | 16 | 4:59:42 | 4:59:42 | 5:01:38 | 5:08:51 | 6:14:33 | 4:59:42 |
| F50-54 | 8 | 5:23:24 | 5:23:24 | 5:23:24 | 5:36:00 | 5:48:49 | 5:23:24 |
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.