The First Ironman Triathlon Is Held

Setting the scene

Debates among Honolulu runners and swimmers about who was fittest led to a dare: could anyone finish a 2.4-mile swim, 112-mile bike ride, and 26.2-mile marathon in one day?

What happened

The first Ironman Triathlon was held on February 18, 1978, on Oahu; Gordon Haller won in 11 hours, 46 minutes, with only twelve starters and a handful of finishers.

Why it still matters

Ironman became the brand name for extreme endurance racing and spawned hundreds of qualifying events worldwide. Memorable detail: founder John Collins reportedly handed out flyers saying, "Swim 2.4 miles! Bike 112 miles! Run 26.2 miles! Brag for the rest of your life!"

Background

Gordon Haller won the original challenge.