Age-group thresholds

IRONMAN Wisconsin 2004 · 1,973 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 1,520 9:43:15 10:38:53 11:04:59 11:41:11 12:59:42 8:52:33
MPRO 20 8:52:33 8:52:33 8:55:41 9:04:27 9:43:15 8:52:33
M18-24 68 10:11:32 10:28:36 11:00:53 11:17:11 12:25:19 10:11:32
M25-29 154 10:12:19 10:29:06 10:53:31 11:32:52 12:39:15 10:05:03
M30-34 358 9:53:56 10:39:08 10:57:45 11:38:04 12:48:08 9:19:17
M35-39 329 9:37:41 10:37:11 10:58:30 11:34:20 12:52:23 9:12:29
M40-44 288 9:57:44 10:52:58 11:17:54 11:47:42 13:03:42 9:51:35
M45-49 150 10:01:21 10:53:39 11:20:23 11:59:56 13:25:23 9:41:46
M50-54 92 11:06:40 11:27:15 11:49:31 12:35:25 13:41:22 11:06:40
M55-59 41 11:39:17 12:09:43 12:22:42 12:48:02 14:20:41 11:39:17
M60-64 15 12:27:28 12:27:28 12:53:26 13:16:22 15:20:43 12:27:28

Women

Age group Finishers Top 1% Top 5% Top 10% Top 20% Median Best
All age groups 453 10:43:25 11:24:46 11:48:50 12:31:41 13:52:10 10:05:40
FPRO 10 10:05:40 10:05:40 10:05:40 10:13:28 10:45:27 10:05:40
F18-24 34 11:26:51 11:34:54 11:50:45 12:10:51 13:38:40 11:26:51
F25-29 89 11:07:24 11:28:14 11:54:13 12:29:48 13:47:37 11:07:24
F30-34 124 11:07:37 11:25:25 11:46:24 12:34:54 14:14:36 10:57:25
F35-39 60 10:31:12 11:32:54 11:45:56 12:30:58 13:47:26 10:31:12
F40-44 72 11:20:27 11:54:52 12:19:44 12:51:40 13:46:22 11:20:27
F45-49 42 10:49:17 11:46:54 12:00:21 12:46:46 13:41:28 10:49:17
F50-54 21 13:23:15 13:26:42 13:28:06 13:40:26 15:12:12 13:23:15

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.