Age-group thresholds

IRONMAN 70.3 Wisconsin 2017 · 1,771 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 1,151 4:30:05 4:58:53 5:14:25 5:35:32 6:20:35 4:19:22
M18-24 33 4:36:35 4:43:42 4:56:55 5:08:20 6:12:20 4:36:35
M25-29 103 4:27:08 5:01:05 5:13:41 5:28:49 6:10:57 4:27:05
M30-34 152 4:23:28 4:44:26 5:00:58 5:25:24 6:13:54 4:19:22
M35-39 185 4:28:40 4:48:26 5:01:06 5:24:52 6:09:30 4:27:52
M40-44 215 4:29:24 4:56:13 5:12:29 5:30:29 6:12:51 4:26:27
M45-49 184 4:47:22 5:09:04 5:21:10 5:39:03 6:23:55 4:41:58
M50-54 129 5:06:55 5:18:17 5:29:07 5:46:52 6:29:56 5:02:38
M55-59 85 5:10:48 5:27:19 5:34:20 5:48:38 6:33:12 5:10:48
M60-64 44 5:08:58 5:41:07 5:50:57 6:09:49 7:09:09 5:08:58
M65-69 18 5:38:33 5:38:33 5:51:57 5:59:13 6:48:39 5:38:33

Women

Age group Finishers Top 1% Top 5% Top 10% Top 20% Median Best
All age groups 620 5:00:38 5:27:48 5:42:50 6:04:14 6:50:08 4:45:48
F18-24 15 5:44:44 5:44:44 5:51:49 6:14:33 7:21:24 5:44:44
F25-29 88 4:45:57 5:24:36 5:35:38 5:52:51 6:39:36 4:45:57
F30-34 82 4:45:48 5:37:17 5:45:27 5:59:24 6:51:21 4:45:48
F35-39 119 5:09:28 5:21:20 5:32:46 5:56:32 6:40:41 4:58:18
F40-44 102 5:00:38 5:20:15 5:36:05 6:00:15 6:44:52 4:56:50
F45-49 102 5:20:36 5:35:41 5:54:49 6:10:12 6:39:18 5:11:24
F50-54 66 5:18:18 5:51:36 6:04:15 6:22:02 6:56:33 5:18:18
F55-59 30 5:18:30 5:55:46 6:05:35 6:32:32 7:02:54 5:18:30
F60-64 12 5:55:52 5:55:52 6:42:41 6:50:41 7:10:20 5:55:52

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.