Age-group thresholds
IRONMAN 70.3 Knokke-Heist · 3 editions (2023, 2024, 2025) · 5,998 finishers
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 | 5,077 | 3:58:31 | 4:28:13 | 4:40:55 | 4:54:37 | 5:24:57 | 3:39:37 |
| MPRO | 59 | 3:39:37 | 3:40:54 | 3:43:51 | 3:45:49 | 3:50:48 | 3:39:37 |
| M18-24 | 564 | 4:10:11 | 4:37:01 | 4:44:51 | 4:59:59 | 5:27:40 | 3:57:11 |
| M25-29 | 993 | 4:08:13 | 4:27:40 | 4:40:48 | 4:54:10 | 5:27:17 | 3:53:20 |
| M30-34 | 980 | 4:04:35 | 4:28:04 | 4:38:19 | 4:51:38 | 5:18:46 | 3:53:17 |
| M35-39 | 713 | 4:13:55 | 4:26:43 | 4:34:10 | 4:50:30 | 5:17:42 | 4:05:15 |
| M40-44 | 585 | 4:17:51 | 4:29:47 | 4:42:13 | 4:52:35 | 5:23:19 | 4:07:35 |
| M45-49 | 451 | 4:25:33 | 4:36:33 | 4:46:19 | 4:57:35 | 5:26:16 | 4:09:43 |
| M50-54 | 361 | 4:30:59 | 4:46:43 | 4:53:04 | 5:01:43 | 5:30:52 | 4:14:58 |
| M55-59 | 215 | 4:33:03 | 4:45:53 | 4:54:09 | 5:08:32 | 5:37:44 | 4:21:37 |
| M60-64 | 111 | 4:45:58 | 4:54:19 | 4:58:14 | 5:22:27 | 5:50:56 | 4:41:02 |
| M65-69 | 35 | 5:01:17 | 5:14:19 | 5:19:40 | 5:24:20 | 6:01:00 | 5:01:17 |
| M70-74 | 8 | 5:42:06 | 5:42:06 | 5:42:06 | 6:13:44 | 6:50:43 | 5:42:06 |
Women
| Age group | Finishers | Top 1% | Top 5% | Top 10% | Top 20% | Median | Best |
|---|---|---|---|---|---|---|---|
| All age groups | 921 | 4:18:12 | 4:42:59 | 5:03:33 | 5:22:54 | 5:56:18 | 4:09:15 |
| FPRO | 33 | 4:09:15 | 4:13:36 | 4:14:06 | 4:16:41 | 4:19:02 | 4:09:15 |
| F18-24 | 75 | 4:37:56 | 4:50:58 | 5:02:18 | 5:19:45 | 5:58:17 | 4:37:56 |
| F25-29 | 260 | 4:29:22 | 4:56:32 | 5:11:20 | 5:30:40 | 5:56:00 | 4:26:38 |
| F30-34 | 150 | 4:45:32 | 4:56:37 | 5:10:45 | 5:22:56 | 5:53:04 | 4:39:56 |
| F35-39 | 108 | 4:43:13 | 4:56:33 | 5:02:48 | 5:19:44 | 5:53:04 | 4:36:03 |
| F40-44 | 95 | 4:34:50 | 4:54:06 | 5:13:48 | 5:25:36 | 5:52:21 | 4:34:50 |
| F45-49 | 82 | 4:57:07 | 5:08:25 | 5:18:37 | 5:36:00 | 6:11:11 | 4:57:07 |
| F50-54 | 64 | 4:44:19 | 5:11:37 | 5:16:22 | 5:24:08 | 6:01:16 | 4:44:19 |
| F55-59 | 33 | 5:25:50 | 5:26:57 | 5:35:22 | 5:37:17 | 6:11:31 | 5:25:50 |
| F60-64 | 15 | 5:38:19 | 5:38:19 | 5:41:55 | 5:44:52 | 6:08:39 | 5:38:19 |
| F65-69 | 5 | 6:09:06 | 6:09:06 | 6:09:06 | 6:09:06 | 6:58:19 | 6:09:06 |
Source: Seffrin A., Nikolaidis P.T., Andrade M.S., Villiger E., Rosemann T., Weiss K., Ferreira D., Knechtle B. (2026). A dataset of 2.7 million IRONMAN triathlon records with transition times (2002-2026), v3.0.0. Zenodo. CC BY 4.0. doi:10.5281/zenodo.22097794.