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Ironman World Championship – Kona

Triathlon: Swim 3.86km, Bike 180.2km, Run 42.2km
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The inaugural Hawaiian Ironman Triathlon was conceptualized in 1977 as a way to challenge athletes who had seen success at endurance swim, running and biathlon events. Honolulu-based Navy couple Judy and John Collins proposed combining the three toughest endurance races in Hawai’i—the 2.4-mile Waikiki Roughwater Swim, 112 miles of the Around-O’ahu Bike Race and the 26.2-mile Honolulu Marathon—into one event.

On February 18, 1978, 15 people came to Waikiki to take on the IRONMAN challenge. Prior to racing, each received three sheets of paper with a few rules and a course description. The last page read: "Swim 2.4 miles! Bike 112 miles! Run 26.2 miles! Brag for the rest of your life!"

In 1981, the race moved from the tranquil shores of Waikiki to the barren lava fields of Kona on the Big Island of Hawai’i. Along the Kona Coast, black lava rock dominates the panorama, and athletes battle the "ho’omumuku" crosswinds of 45 mph, 95-degree temperatures and a scorching sun.

The IRONMAN World Championship centers on the dedication and courage exhibited by participants who demonstrate the IRONMAN mantra that ANYTHING IS POSSIBLE.® On October 14th, over 2,000 athletes will embark on a 140.6-mile journey that presents the ultimate test of body, mind and spirit to earn the title of IRONMAN.

How to enter the Ironman World Championship – Kona

  1. Ironman

    Triathlon: Swim 3.86km, Bike 180.2km, Run 42.2km

Ironman World Championship – Kona route


Without a doubt, the mass swim start is the most emotionally charged start in the sport, thanks to TV helicopters, enthusiastic spectators and the sun rising over Mt. Hualalai. Currents can be a factor, so a few pre-race practice swims in the bay are advised. Water temperature in Kailua Bay is typically around 79 F.


As cyclists make their way north along the Queen Ka’ahumanu Highway, from Kailua-Kona to the turnaround in Hawi, they can be exposed to intense trade winds that buffet much of the exposed western and northern coast of the Big Island. The winds vary in intensity from steady to heavy blasts that can blow cyclists across the road. For this reason, disc wheels are not permitted. Winds may subside during the gradual climb to Hawi but pick up again as athletes make their way to T2. CAUTION: The Queen Ka`ahumanu Highway is under construction. Use caution and awareness of traffic transitions, message boards, barricades, steel plates and delineators along the highway. Remember to always ride single file.


After exiting T2, runners will wind through town before taking on Ali’i Drive, where spectators will pack the roads. Athletes will then retrace their steps, climb up Palani Road to the Queen Ka’ahumanu Highway to make their way to the Natural Energy Laboratory Hawaii Authority (NELHA). Unless cloud cover or nightfall spares you, anticipate high heat and humidity on the run course.

Event Details

What’s Included

This event is by  qualification only!


What divisions are offered at the 2018 IRONMAN World Championship?
Professional, Age Group, Handcycle, PC/Open, Military

I am an age-group athlete; how do I qualify?Athletes gain entry into the 2018 IRONMAN World Championship one of three ways: by earning a slot at one of the qualifying events held worldwide, being selected in the IRONMAN Legacy program or by winning a slot through the IRONMAN charitable eBay Auction. Official qualifying events award IRONMAN World Championship slots to their top Age Group finishers. Qualifying races are 2.4-mile swim, 112-mile bike, 26.2-mile run.

I am a Handcycle athlete; how do I qualify? Athletes who are paraplegic, quadriplegic or double above-the-knee amputees and use a hand cranked cycle on the bike segment and racing chair for the run segment, may compete for the 2018 IRONMAN World Championship qualifying slots at the following events:

IRONMAN 70.3 New Zealand, March 3, 2018: one (1) male slot and (1) female slot
IRONMAN 70.3 Luxembourg, June 17th, 2018: two (2) male slots and one (1) female slot
IRONMAN 70.3 Buffalo Springs, June 24th, 2018: one (1) male slot and (1) female slot

I am interested in the Military Division; how do I qualify? Military qualifiers for the 2018 IRONMAN World Championship are:

1) 2017 IRONMAN 70.3 Superfrog (12 slots)

2) 2017 IRONMAN 70.3 Middle East Championship Bahrain – 10 slots

Ironman World Championship – Kona weather forecast

Humid and partly cloudy throughout the day.

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"Swim 2.4 Miles. Bike 112 miles. Run 26.2. Brag for the rest of your life." - John Collins, IRONMAN co-founder Since its inception, IRONMAN has been represented by ambitious and courageous people who aren't afraid to push their limits. Take a walk through history with us, through some of the finest and most memorable moments in IRONMAN racing.

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