The triathlon is a single race that combines three elements: a 1.5km swim, a 40km bike ride and a 10km run (in that order). The mixed team relay event debuted at the Tokyo Games and returns in Paris.

Aiming for 40 consecutive full ironman-distance triathlons for her 40th birthday, Laura Massey-Pugh ultimately completed 32 – setting a new women’s world record in one of endurance sports toughest ...