Age-group thresholds

IRONMAN 70.3 Branson 2012 · 761 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 609 4:26:25 5:01:20 5:17:47 5:40:12 6:22:05 4:04:22
MPRO 10 4:04:22 4:04:22 4:04:22 4:08:22 4:14:26 4:04:22
M18-24 35 4:53:38 5:10:20 5:17:22 5:27:42 6:09:11 4:53:38
M25-29 76 4:38:15 5:01:20 5:25:08 5:36:28 6:29:55 4:38:15
M30-34 111 4:47:09 4:53:04 5:11:37 5:30:32 6:17:28 4:36:42
M35-39 121 4:43:40 5:05:50 5:16:56 5:35:49 6:17:37 4:41:58
M40-44 101 5:06:03 5:22:22 5:26:15 5:47:52 6:20:26 4:56:46
M45-49 78 4:54:40 5:19:53 5:33:48 5:50:57 6:22:05 4:54:40
M50-54 43 5:07:40 5:20:36 5:23:11 5:48:42 6:23:02 5:07:40
M55-59 24 5:39:12 5:44:27 5:53:02 5:58:52 6:48:57 5:39:12
M60-64 8 5:45:18 5:45:18 5:45:18 6:17:59 7:14:19 5:45:18

Women

Age group Finishers Top 1% Top 5% Top 10% Top 20% Median Best
All age groups 152 4:57:33 5:24:33 5:43:24 5:59:42 6:49:35 4:57:03
F18-24 7 6:34:12 6:34:12 6:34:12 6:52:43 7:29:12 6:34:12
F25-29 17 5:24:33 5:24:33 5:35:13 5:51:40 6:38:29 5:24:33
F30-34 28 5:12:55 5:19:02 5:20:40 5:43:24 6:25:11 5:12:55
F35-39 41 5:34:10 5:39:57 5:46:52 5:56:25 6:33:50 5:34:10
F40-44 25 5:52:26 6:02:24 6:06:08 6:20:06 7:24:01 5:52:26
F45-49 21 5:51:46 6:03:49 6:19:00 6:37:11 6:59:59 5:51:46
F50-54 7 5:56:54 5:56:54 5:56:54 6:21:02 6:52:25 5:56:54

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.