Age-group thresholds

IRONMAN Maryland 2016 · 1,891 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 1,341 7:25:55 8:19:38 8:46:40 9:26:11 10:31:55 6:59:24
M18-24 29 7:17:40 7:23:51 8:58:11 9:19:44 10:30:22 7:17:40
M25-29 104 7:16:14 8:05:35 8:31:40 9:08:57 10:09:12 7:14:38
M30-34 127 7:04:06 7:50:37 8:22:01 8:53:56 10:13:40 6:59:24
M35-39 217 7:20:57 7:50:28 8:20:41 8:57:47 10:15:59 7:04:48
M40-44 220 7:26:11 8:03:30 8:31:59 9:11:33 10:18:30 7:13:55
M45-49 289 8:01:00 8:36:38 9:15:43 9:33:39 10:34:39 7:41:27
M50-54 189 8:08:14 8:31:34 9:02:04 9:48:16 10:48:32 7:56:52
M55-59 92 8:27:33 9:04:18 9:29:25 10:03:38 11:19:00 8:27:33
M60-64 46 8:59:10 9:24:44 9:43:22 10:25:09 11:35:56 8:59:10
M65-69 20 9:35:55 9:35:55 9:46:18 10:04:35 11:32:57 9:35:55
M70-74 7 10:45:02 10:45:02 10:45:02 11:29:01 12:26:24 10:45:02

Women

Age group Finishers Top 1% Top 5% Top 10% Top 20% Median Best
All age groups 550 8:26:57 9:06:24 9:35:58 10:13:06 11:31:33 8:14:27
F18-24 9 8:46:33 8:46:33 8:46:33 9:50:06 10:32:15 8:46:33
F25-29 51 8:32:56 8:50:49 9:31:35 10:01:46 11:19:45 8:32:56
F30-34 65 8:23:54 9:01:49 9:12:39 9:58:47 11:14:17 8:23:54
F35-39 87 8:14:27 8:32:52 8:51:31 9:44:43 10:59:36 8:14:27
F40-44 105 9:01:52 9:16:35 9:37:56 10:07:22 11:36:03 8:25:20
F45-49 97 8:30:22 9:09:10 9:43:07 10:26:40 11:29:54 8:30:22
F50-54 72 9:00:22 9:32:19 10:00:04 10:36:42 11:37:52 9:00:22
F55-59 45 9:44:28 10:02:33 10:40:10 10:57:00 12:18:31 9:44:28
F60-64 16 11:04:07 11:04:07 11:10:42 11:56:42 12:26:40 11:04:07

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.