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 | 101 | 4:23:34 | 5:04:58 | 5:26:00 | 5:38:23 | 6:27:36 | 4:04:44 |
| M25-29 | 7 | 7:01:12 | 7:01:12 | 7:01:12 | 7:07:32 | 7:24:10 | 7:01:12 |
| M30-34 | 18 | 5:11:40 | 5:11:40 | 5:22:10 | 5:31:36 | 6:17:14 | 5:11:40 |
| M35-39 | 31 | 4:38:11 | 5:25:46 | 5:27:43 | 5:41:53 | 6:18:33 | 4:38:11 |
| M40-44 | 23 | 5:04:58 | 5:30:26 | 5:32:29 | 5:38:23 | 6:18:19 | 5:04:58 |
| M45-49 | 7 | 4:46:12 | 4:46:12 | 4:46:12 | 5:35:09 | 6:25:13 | 4:46:12 |
Women
| Age group | Finishers | Top 1% | Top 5% | Top 10% | Top 20% | Median | Best |
|---|---|---|---|---|---|---|---|
| All age groups | 17 | 5:28:55 | 5:28:55 | 5:53:40 | 6:01:23 | 6:41:57 | 5:28:55 |
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.