Ironman
70.3 (1.9 / 90 / 21.1 km) · Europe
Official website: ironman.com/races/im703-cascais
Ironman Cascais 70.3 is a 70.3 (half-distance) triathlon in Portugal, part of the Ironman calendar. The next edition is on 17 October 2026. The course is 1.9 km of swimming, 90 km on the bike and 21.098 km of running.
Climbing adds up to 1091 m, 820 m on the bike and 271 m on the run, a demanding profile for the distance. The course is described as hilly.
Water temperature is typically around 17 °C, wetsuit territory for almost everyone.
Pacer Quest rates Ironman Cascais 70.3 as Medium: 1091 m of climbing (high); finishers -1% faster than the average 70.3. The rating is automatic and compares total climbing for the distance, water temperature and, where results exist, how finishers compare with the average for that distance.
At the 2025 edition, 70 qualifying slots were shared among 2336 ranked finishers, with slots allocated by age-graded rank under IRONMAN's performance-based system. For example, a M40-44 athlete needed roughly 4:45:41 and a F40-44 athlete needed roughly 4:40:42 to be inside the line.
Open the Race Lab to simulate this course with your own swim, bike and run paces, or use the Qualify module to place your time against these results. Registration and official details are on the organiser's website.
| Age group | Finishers | Fastest | Median | Qualifying time (est.) |
|---|---|---|---|---|
| M18-24 | 151 | 4:02:29 | 5:46:23 | 4:24:36 |
| M25-29 | 347 | 4:00:17 | 5:40:49 | 4:26:29 |
| M30-34 | 328 | 4:03:26 | 5:44:30 | 4:34:03 |
| M35-39 | 290 | 4:12:38 | 5:38:59 | 4:38:31 |
| M40-44 | 245 | 4:21:54 | 5:44:03 | 4:45:41 |
| M45-49 | 225 | 4:32:02 | 5:51:46 | 4:54:43 |
| M50-54 | 168 | 4:42:58 | 6:01:50 | 4:59:33 |
| M55-59 | 115 | 4:49:23 | 6:25:40 | 5:08:55 |
| M60-64 | 46 | 4:58:05 | 6:24:43 | 5:22:59 |
| M65-69 | 11 | 5:16:04 | 6:04:00 | 5:46:20 |
| M70-74 | 2 | 7:25:52 | 7:38:55 | 6:11:40 |
| M75-79 | 1 | 8:15:03 | 8:15:03 | 6:52:12 |
| F18-24 | 34 | 5:11:19 | 6:30:11 | 4:26:42 |
| F25-29 | 75 | 5:00:42 | 6:13:30 | 4:24:36 |
| F30-34 | 100 | 4:48:36 | 6:08:45 | 4:29:13 |
| F35-39 | 61 | 5:15:29 | 6:19:21 | 4:33:58 |
| F40-44 | 35 | 4:53:54 | 6:22:13 | 4:40:42 |
| F45-49 | 41 | 5:27:08 | 6:46:28 | 4:47:51 |
| F50-54 | 32 | 4:59:04 | 6:31:31 | 4:53:28 |
| F55-59 | 21 | 5:31:50 | 6:56:49 | 5:02:32 |
| F60-64 | 8 | 6:35:58 | 7:14:59 | 5:15:20 |
Qualifying time (est.) = the finishing time whose age-graded rank (IRONMAN official factors) lands on the last slot at this edition, derived from published results — the same method as the Pacer Quest Qualify tool. Actual slot allocation and roll-down vary by race and year. Race results data: CoachCox IM Stats.
Also in Portugal
More Ironman 70.3 races
Also raced in October
Other Medium 70.3 courses
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