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 | 316 | 4:10:06 | 4:27:50 | 4:36:03 | 4:50:26 | 5:22:40 | 3:46:16 |
| M18-24 | 26 | 4:14:15 | 4:16:07 | 4:22:54 | 4:36:42 | 5:12:29 | 4:14:15 |
| M25-29 | 38 | 3:46:16 | 3:55:04 | 4:13:08 | 4:38:57 | 5:05:50 | 3:46:16 |
| M30-34 | 50 | 4:10:06 | 4:27:50 | 4:38:24 | 4:50:53 | 5:22:44 | 4:10:06 |
| M35-39 | 43 | 4:20:22 | 4:29:20 | 4:30:02 | 4:39:18 | 5:09:31 | 4:20:22 |
| M40-44 | 59 | 4:10:20 | 4:24:10 | 4:31:45 | 4:49:02 | 5:23:05 | 4:10:20 |
| M45-49 | 43 | 4:30:00 | 4:48:29 | 4:51:54 | 5:02:26 | 5:33:22 | 4:30:00 |
| M50-54 | 28 | 4:34:56 | 4:36:19 | 4:47:09 | 4:53:52 | 5:31:49 | 4:34:56 |
| M55-59 | 19 | 4:47:43 | 4:47:43 | 4:53:17 | 4:55:34 | 5:27:39 | 4:47:43 |
| M60-64 | 5 | 5:12:19 | 5:12:19 | 5:12:19 | 5:12:19 | 5:41:56 | 5:12:19 |
Women
| Age group | Finishers | Top 1% | Top 5% | Top 10% | Top 20% | Median | Best |
|---|---|---|---|---|---|---|---|
| All age groups | 54 | 4:45:30 | 4:53:23 | 5:04:06 | 5:10:23 | 5:47:34 | 4:45:30 |
| F18-24 | 11 | 4:58:59 | 4:58:59 | 5:16:27 | 5:22:23 | 5:43:21 | 4:58:59 |
| F25-29 | 5 | 5:07:15 | 5:07:15 | 5:07:15 | 5:07:15 | 6:19:30 | 5:07:15 |
| F30-34 | 7 | 4:45:30 | 4:45:30 | 4:45:30 | 4:48:28 | 5:18:12 | 4:45:30 |
| F40-44 | 9 | 5:06:17 | 5:06:17 | 5:06:17 | 5:10:23 | 6:02:23 | 5:06:17 |
| F45-49 | 8 | 5:05:06 | 5:05:06 | 5:05:06 | 5:07:37 | 5:57:10 | 5:05:06 |
| F50-54 | 7 | 5:34:54 | 5:34:54 | 5:34:54 | 5:44:41 | 6:04:04 | 5:34:54 |
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.