The inaugural Ironman proves the ‘impossible’ can be done.

On Oahu, John and Judy Collins propose combining a 2.4-mile swim, 112-mile bike, and 26.2-mile run into one race. Fifteen start; twelve finish, becoming the first “Iron Men.” The audacious idea ignites an endurance revolution.
After the success of the first event, organizers committed to stage the race again, turning a one-off dare into an annual endurance institution.
By 1978, small club-run swim-bike-run events were appearing in California, building on San Diego’s 1974 origins and giving the multisport idea grassroots momentum.
On this date, U.S. Navy Commander John Collins and wife Judy organized the inaugural Hawaiian Iron Man Triathlon on Oahu. Fifteen men started the unprecedented 140-mile swim-bike-run challenge combining existing events. Gordon Haller became the world’s first “Ironman” champion, finishing in 11:46.
The Collins’ 1978 race rules included the exhortation: “Swim 2.4 miles! Bike 112 miles! Run 26.2 miles! Brag for the rest of your life.” The line captured the spirit of triathlon’s ultimate challenge.
On this date, U.S. Navy Commander John Collins and wife Judy organized the inaugural Hawaiian Iron Man Triathlon on Oahu. Fifteen men started the unprecedented 140-mile swim-bike-run challenge combining existing events. Gordon Haller became the world’s first “Ironman” champion, finishing in 11:46.
The Collins’ 1978 race rules included the exhortation: “Swim 2.4 miles! Bike 112 miles! Run 26.2 miles! Brag for the rest of your life.” The line captured the spirit of triathlon’s ultimate challenge.
By 1978, small club-run swim-bike-run events were appearing in California, building on San Diego’s 1974 origins and giving the multisport idea grassroots momentum.
After the success of the first event, organizers committed to stage the race again, turning a one-off dare into an annual endurance institution.