Almost everyone who is above 40 knows of the moment when Triathlon and Ironman was put in the spotlight. When Julie Moss crawled across the finish line and Kathleen McCartney passed her up. Julie Moss - Wikipedia
Of the next two decades, triathlon experienced and explosion of expansion, participation, innovation. Not everyone would want to tri the full distance 140.6 triathlon so the Sprint and Olympic or middle distance triathlon were born. Then eventually the half distance. The height of the triathlon era peaking around 2015!