Age-group thresholds

IRONMAN 70.3 Rockford · 1 editions (2025) · 1,646 finishers

Editions: 2025

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 1,132 4:33:58 4:57:25 5:15:42 5:40:17 6:32:54 4:10:32
M18-24 71 4:39:33 4:58:40 5:20:17 5:33:01 6:08:25 4:39:33
M25-29 146 4:27:17 4:50:48 5:03:05 5:23:41 6:13:59 4:24:53
M30-34 174 4:22:01 4:50:54 5:11:05 5:38:35 6:30:46 4:10:32
M35-39 172 4:14:51 4:49:48 5:00:58 5:18:22 6:13:42 4:12:34
M40-44 161 4:53:31 4:56:49 5:20:20 5:34:45 6:35:03 4:52:57
M45-49 137 4:48:08 5:16:35 5:28:40 5:48:28 6:39:10 4:39:19
M50-54 105 5:03:37 5:14:53 5:38:00 5:57:34 6:49:48 4:30:55
M55-59 97 5:02:10 5:30:33 5:46:56 6:03:53 6:48:46 5:02:10
M60-64 47 4:56:17 5:24:54 5:39:57 6:11:45 6:54:28 4:56:17
M65-69 17 5:29:56 5:29:56 5:52:04 6:41:53 7:05:30 5:29:56

Women

Age group Finishers Top 1% Top 5% Top 10% Top 20% Median Best
All age groups 514 4:59:01 5:36:26 5:48:35 6:10:23 7:01:01 4:45:23
F18-24 30 5:30:22 5:32:18 5:36:26 6:04:52 7:02:04 5:30:22
F25-29 57 4:50:22 5:16:22 5:40:47 6:02:44 6:44:00 4:50:22
F30-34 49 4:47:16 5:04:10 5:21:51 6:06:06 6:51:31 4:47:16
F35-39 58 5:03:08 5:24:03 5:37:41 5:50:48 6:34:59 5:03:08
F40-44 85 4:51:07 5:36:54 5:50:06 6:13:07 7:12:54 4:51:07
F45-49 79 4:45:23 5:42:25 5:48:34 6:11:13 7:01:54 4:45:23
F50-54 56 5:13:37 5:37:28 5:54:59 6:10:40 6:54:49 5:13:37
F55-59 51 5:17:32 6:00:42 6:12:18 6:33:01 7:19:32 5:17:32
F60-64 29 5:33:01 6:03:26 6:06:20 6:36:11 7:26:13 5:33:01
F65-69 16 5:56:11 5:56:11 6:37:48 6:43:13 7:19:00 5:56:11

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.