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 | 373 | 4:18:30 | 4:37:26 | 4:45:53 | 5:02:11 | 5:38:56 | 4:07:00 |
| M25-29 | 44 | 4:25:25 | 4:29:15 | 4:36:30 | 4:43:26 | 5:26:40 | 4:25:25 |
| M30-34 | 78 | 4:07:00 | 4:24:33 | 4:39:25 | 5:03:14 | 5:35:26 | 4:07:00 |
| M35-39 | 78 | 4:11:53 | 4:38:10 | 4:49:05 | 5:05:32 | 5:37:27 | 4:11:53 |
| M40-44 | 79 | 4:32:27 | 4:36:06 | 4:39:09 | 4:58:23 | 5:42:17 | 4:32:27 |
| M45-49 | 49 | 4:28:13 | 4:42:02 | 4:56:52 | 5:05:14 | 5:36:47 | 4:28:13 |
| M50-54 | 27 | 4:49:25 | 4:49:42 | 4:51:19 | 5:03:35 | 5:40:26 | 4:49:25 |
| M55-59 | 12 | 5:26:03 | 5:26:03 | 5:30:38 | 5:38:55 | 6:05:45 | 5:26:03 |
Women
| Age group | Finishers | Top 1% | Top 5% | Top 10% | Top 20% | Median | Best |
|---|---|---|---|---|---|---|---|
| All age groups | 62 | 4:41:01 | 5:05:01 | 5:14:18 | 5:26:44 | 5:52:11 | 4:41:01 |
| F25-29 | 7 | 4:43:31 | 4:43:31 | 4:43:31 | 5:26:40 | 5:50:15 | 4:43:31 |
| F30-34 | 8 | 5:14:18 | 5:14:18 | 5:14:18 | 5:33:51 | 5:44:11 | 5:14:18 |
| F35-39 | 19 | 4:41:01 | 4:41:01 | 4:46:57 | 5:08:55 | 5:28:24 | 4:41:01 |
| F40-44 | 16 | 5:06:34 | 5:06:34 | 5:25:58 | 5:30:31 | 5:58:59 | 5:06:34 |
| F45-49 | 5 | 5:34:33 | 5:34:33 | 5:34:33 | 5:34:33 | 5:58:50 | 5:34:33 |
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.