Baby uncertainty leaves Sam Long as a doubt for what is sure to be an emotional day at IRONMAN Arizona this weekend.

From calm waters in London to leopard seal-filled seas in Antarctica, this incredible triathlon adventure has just begun.

It turned into a brilliant duel but former top pro says more and more 70.3 races are simply going to come down to the run.

We get the thoughts and post-race analysis from top former pro on a fascinating women's IRONMAN 70.3 Wold Championship.

Challenge Family CEO, Jort Vlam, is planning for a day when triathlon is a mainstream sport, where athletes have a choice of ...

Never miss out with our triathlon alerts & digest. Get a dose of adventure & inspiration with Boundless. Welcome to the home of endurance sports – a haven for triathlon, swimming, cycling, and running ...

Taylor Knibb admitted she went through a rollercoaster of emotions as she bounced back from Kona heartbreak with second place ...

Asked about his scorecard for the season, Blummenfelt was his own harshest critic: “Average I would say. It gives me ...

In one of triathlon's greatest-ever middle-distance races it was Jelle Geens who just got the better of Kristian Blummenfelt.

Brilliant Belgian had to overcome a bent TT extension bar, a bashed rear derailleur and a sore hip before defending his title ...

He's won Olympic gold and Tour de France stages but it's only now that he has become a world champion for the first time.

First world title continues to prove elusive for British star as her early charge on the run is scuppered by a calf strain.