Age-group thresholds

IRONMAN 70.3 Rio de Janeiro 2025 · 1,443 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 1,153 3:53:00 4:18:58 4:33:52 4:49:11 5:21:15 3:31:24
MPRO 13 3:31:24 3:31:24 3:35:44 3:35:47 3:45:26 3:31:24
M18-24 51 3:53:02 4:34:54 4:40:33 4:53:31 5:18:23 3:53:02
M25-29 141 3:59:05 4:15:58 4:27:29 4:44:39 5:12:58 3:52:00
M30-34 218 4:03:34 4:16:49 4:27:38 4:49:27 5:19:18 3:59:28
M35-39 249 4:06:32 4:26:13 4:40:52 4:48:56 5:19:10 3:50:06
M40-44 225 4:14:10 4:31:47 4:41:46 4:51:36 5:22:02 3:59:58
M45-49 137 3:58:05 4:18:08 4:25:12 4:53:02 5:22:48 3:49:48
M50-54 60 4:22:35 4:38:13 4:49:34 5:01:36 5:31:45 4:22:35
M55-59 33 4:17:01 4:30:38 4:42:35 4:51:54 5:43:35 4:17:01
M60-64 20 4:51:31 4:51:31 4:56:18 5:14:46 5:55:57 4:51:31
M65-69 5 5:21:28 5:21:28 5:21:28 5:21:28 6:19:06 5:21:28

Women

Age group Finishers Top 1% Top 5% Top 10% Top 20% Median Best
All age groups 290 4:14:33 4:32:39 4:52:52 5:10:12 5:45:57 4:01:23
FPRO 11 4:01:23 4:01:23 4:05:29 4:14:33 4:20:16 4:01:23
F18-24 18 4:53:04 4:53:04 5:02:15 5:12:36 5:32:12 4:53:04
F25-29 33 4:26:01 4:39:20 4:55:16 5:04:27 5:38:53 4:26:01
F30-34 56 4:26:46 4:34:48 4:52:52 5:10:12 5:48:26 4:26:46
F35-39 59 4:23:32 4:47:50 4:50:56 5:05:44 5:33:10 4:23:32
F40-44 53 4:50:23 5:00:40 5:12:56 5:24:09 6:02:00 4:50:23
F45-49 29 4:37:02 4:56:34 4:58:27 5:24:02 5:59:54 4:37:02
F50-54 17 5:04:42 5:04:42 5:12:14 5:28:57 6:29:59 5:04:42
F55-59 8 5:04:06 5:04:06 5:04:06 5:32:10 5:37:20 5:04:06

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.