IRONMAN Hawaii: Essential Data


As the first IRONMAN races took place on Oahu Island, Hawaii, the term 'IRONMAN' is mainly associated with the event in the Pacific Ocean. Meanwhile several triathlon challenges labelled 'IRONMAN' (full distance: 2.4 / 112 / 26.2) and 'IRONMAN 70.3' (half distance: 1.2 / 56 / 13.1) are held throughout the world. They are the exclusive qualifying races for IRONMAN Hawaii, which today is the IRONMAN Triathlon World Championship. 'IRONMAN' is a Trade Mark owned by WTC.


World Triathlon Corporation (WTC).


Kailua-Kona on 'Big Island', Hawaii/USA.


Always on Saturday in October closest to next moon

Start Times

•  Professional athletes: 6:45 a.m.
•  Age-group athletes: 7:00 a.m.


Nearly 1800 competitors from approximately 50 countries. Most of them qualify via one of the qualifying races of the worldwide IRONMAN / IRONMAN 70.3 series. Some are chosen by lottery.

Distances / Legs


2.4 miles swim in the Pacific Ocean, with start and exit at Kailua Pier.
» Map of the swim section


112 miles bike ride north along the Kona Coast through scorching lava fields, then along the Kohala Coast to the small village of Hawi and back on the same route to transition in Kailua-Kona.
» Map of the bike section


26.2 miles run (marathon) through Kailua-Kona and onto the same highway, the Queen Ka'ahumanu, used for the bike course. Then athletes run back into Kailua-Kona, coming down Alii Drive.
» Map of the run section

Cut-Off Times

The swim course closes 2:20 hours after the start of the race (age-groups), the bike course after 10:30 hours (i.e. at 5:30 p.m.). All athletes have to cross the finish line by midnight, i.e. 17 hours after the start of the race.

Race Day Conditions


Water temperature approximately 79 °F (26 °C)


Outdoor temperatures range from 82 °F (28 °C) on Kona Coast to 100 °F (38 °C) into the lava fields


Humidity hovering about 90 %


Dreaded 'Mumuku' crosswinds on parts of the bike course can blow as strong as 60 mph


Average rainfall in October: 1.20 inches (Kailua-Kona).


Sunrise about 6:20 a.m. / sunset about 6:05 p.m.


In 2008 a total purse of $ 560,000 was distributed among the top-10 male and female finishers. The winners received each $ 110,000, those in second place $ 55,000.



Due to water temperature swimming with wetsuit is forbidden .


Due to the sometimes extrem winds the usage of a bike with disc-wheel is forbidden.

Winners 2018

Men:       LANGE, Patrick (GER), 07:52:39
Women: RYF, Daniela (SUI), 08:26:18

Course Records

Men:       LANGE, Patrick (GER), 07:52:39 in 2018
Women: RYF, Daniela (SUI), 08:26:18 in 2018

Next Races

2014: 11 October
2015: 10 October
2016:   8 October



REFERENCE:  Media Information Guide of the FORD IRONMAN Triathlon World Championship. Copyright © WTC.