Ironman
70.3 (1.9 / 90 / 21.1 km) · S. America
Official website: ironman.com/races/im703-rio-de-janeiro
Ironman Rio De Janeiro 70.3 is a 70.3 (half-distance) triathlon in Brazil, part of the Ironman calendar. The next edition is in August 2027. The course is 1.9 km of swimming, 90 km on the bike and 21.098 km of running.
Climbing adds up to 1659 m, 1344 m on the bike and 315 m on the run, a demanding profile for the distance. The course is described as flat.
Water temperature is typically around 23 °C, inside the wetsuit-optional range for age-group athletes, who may wear one up to 24.5 °C.
Pacer Quest rates Ironman Rio De Janeiro 70.3 as Hard: 1659 m of climbing (high); finishers +1% slower 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 2026 edition, 50 qualifying slots were shared among 1302 ranked finishers, with slots allocated by age-graded rank under IRONMAN's performance-based system. For example, a M40-44 athlete needed roughly 4:49:10 and a F40-44 athlete needed roughly 4:44:08 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 | 49 | 4:34:19 | 5:46:27 | 4:27:49 |
| M25-29 | 113 | 4:07:02 | 5:41:30 | 4:29:44 |
| M30-34 | 196 | 4:17:37 | 5:50:33 | 4:37:23 |
| M35-39 | 247 | 4:07:03 | 5:51:53 | 4:41:55 |
| M40-44 | 194 | 4:18:14 | 6:05:02 | 4:49:10 |
| M45-49 | 152 | 4:10:33 | 6:02:08 | 4:58:18 |
| M50-54 | 75 | 4:34:01 | 6:14:00 | 5:03:12 |
| M55-59 | 40 | 4:44:49 | 5:57:03 | 5:12:41 |
| M60-64 | 17 | 5:30:58 | 6:36:54 | 5:26:56 |
| M65-69 | 6 | 5:46:21 | 6:55:28 | 5:50:33 |
| M70-74 | 2 | 6:14:55 | 6:50:44 | 6:16:12 |
| F18-24 | 13 | 4:49:53 | 5:36:50 | 4:29:57 |
| F25-29 | 29 | 4:55:05 | 5:57:57 | 4:27:49 |
| F30-34 | 55 | 4:48:26 | 6:32:53 | 4:32:30 |
| F35-39 | 36 | 4:38:51 | 6:16:36 | 4:37:18 |
| F40-44 | 40 | 5:11:19 | 6:18:49 | 4:44:08 |
| F45-49 | 15 | 5:20:07 | 6:30:36 | 4:51:22 |
| F50-54 | 14 | 5:38:48 | 6:42:48 | 4:57:03 |
| F55-59 | 5 | 5:44:19 | 6:16:54 | 5:06:13 |
| F60-64 | 3 | 6:00:00 | 6:16:50 | 5:19:10 |
| F65-69 | 1 | 6:42:35 | 6:42:35 | 5:44:28 |
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 Brazil
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Also raced in August
Other Hard 70.3 courses
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Race names are used for identification only. Pacer Quest is independent and not affiliated with, endorsed by or sponsored by The IRONMAN Group / World Triathlon Corporation, Challenge Family, T100 or any race organiser. IRONMAN® and IRONMAN 70.3® are registered trademarks of World Triathlon Corporation.