Age-group thresholds

IRONMAN 70.3 Boulder 2014 · 1,450 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 887 3:55:30 4:31:31 4:44:47 5:04:03 5:44:26 3:42:13
MPRO 17 3:42:13 3:42:13 3:44:05 3:47:23 3:55:30 3:42:13
M18-24 15 3:58:10 3:58:10 4:23:01 4:52:16 5:31:46 3:58:10
M25-29 68 4:01:23 4:19:06 4:40:41 4:59:35 5:44:30 4:01:23
M30-34 128 4:17:56 4:38:07 4:44:48 4:59:14 5:36:10 4:17:29
M35-39 161 4:14:59 4:36:33 4:42:33 5:02:46 5:36:53 4:03:08
M40-44 166 4:23:07 4:34:00 4:45:27 4:58:39 5:37:37 4:22:40
M45-49 143 4:29:02 4:41:07 4:49:40 5:05:28 5:47:16 4:22:00
M50-54 109 4:42:41 4:50:12 5:04:22 5:18:45 5:59:47 4:35:19
M55-59 50 4:50:57 4:59:38 5:11:37 5:16:42 5:50:51 4:50:57
M60-64 18 5:09:30 5:09:30 5:19:31 5:35:10 6:08:33 5:09:30
M65-69 9 5:12:11 5:12:11 5:12:11 5:41:21 6:16:12 5:12:11

Women

Age group Finishers Top 1% Top 5% Top 10% Top 20% Median Best
All age groups 563 4:17:36 5:03:51 5:24:06 5:42:14 6:20:11 4:07:37
FPRO 10 4:07:37 4:07:37 4:07:37 4:09:00 4:13:38 4:07:37
F18-24 17 5:36:03 5:36:03 5:55:35 6:20:11 6:32:52 5:36:03
F25-29 52 4:44:18 4:56:34 5:16:50 5:41:37 6:17:18 4:44:18
F30-34 92 4:33:53 5:04:12 5:18:56 5:38:52 6:19:07 4:33:53
F35-39 109 4:40:25 5:18:20 5:28:04 5:40:29 6:13:27 4:36:42
F40-44 112 5:02:16 5:07:08 5:22:17 5:37:49 6:14:10 5:02:00
F45-49 74 4:59:15 5:20:59 5:32:24 5:45:16 6:24:06 4:59:15
F50-54 52 5:03:07 5:41:13 5:49:11 6:04:27 6:34:02 5:03:07
F55-59 27 4:53:41 5:21:49 5:38:33 6:07:22 6:41:34 4:53:41
F60-64 13 5:29:17 5:29:17 5:52:02 6:25:08 7:16:29 5:29:17

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.