A triathlon is a multi-sport event featuring swimming, cycling and running in immediate succession over various distances. Triathletes compete for the fastest overall course completion time, including timed transitions. To compete in this grueling race, athletes have to be in elite physical shape. STACK's content features four-time Ironman champion Chrissie Wellington and Ironman World Champion Chris "Macca" McCormack. Tap into their mental toughness to succeed.

Latest in Triathlon

How Training Like a Fighter Can Make You a Better Athlete

Every fight we watch, whether it is boxing, MMA, or something else, is won in the gym before either contestant enters the ring. Fights of all kind are a...

How to Choose the Correct Running Shoes for Triathletes

Triathlons are high impact sports that require kit designed to handle the stress of training and racing. Running shoes for triathletes are an important...

What Every Athlete Can Learn From Ironman Record Holder Craig Alexander

A 2.4-mile swim. A 112-mile bike ride. A 26.2-mile marathon run. Just listing the components of an Ironman Triathlon can be enough to make ...

8 Ways to Speed Up Your Triathlon Transitions

Summer is just around the corner, and with it, another triathlon season. You've spent the past couple of months putting in laps in the pool, spins on...

Why Endurance Athletes Need to Deadlift

If you are an endurance athlete, you may think that continuing to practice a particular event for prolonged periods of time will get you to where you...

Latest Videos in Triathlon

Chris "Macca" McCormack's Mental Toughness

Ironman World Champion Chris "Macca" McCormack talks about the importance of mental toughness in triathlons and shares his strategies for overcoming pain and fatigue late in a race.

Sarah Reinertsen's Ironman Training

In Episode 2 of our video series featuring challenged athlete Sarah Reinertsen, we break down her rigourous Ironman training in the water, on the bike and on land.

Chris "Macca" McCormack's Advice for Endurance Athletes

Ironman World Champion Chris "Macca" McCormack shares his experiences and gives advice to young endurance athletes.

Chris "Macca" McCormack on Fueling with Clif Bars and Shots

Ironman World Champion Chris "Macca" McCormack discusses the advantages of fueling during a race with Clif Bars and Shots.

Chris "Macca" McCormack's Career Highlights

Chris "Macca" McCormack, Ironman World Champion, shares highlights from his tremendously successful triathlon career.