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How to prepare for the Ironman marathon – expert insights from six-time World Champion

The 26.2 mile marathon at the end of an Ironman can be make or break. Whether you're a first timer flirting with the cut offs, or an experienced racer trying to hit that new PR finish time. So what can you do in training to make sure you can run strong, all the way to the finish line? Ironman triathlon legend Mark Allen shares his expert tips.

By Mark Allen

Last updated -

16 Jul 2025

Running a marathon on its own is a huge challenge. But tagging the 26.2 mile run on to the end of a 2.4 mile swim and a 112 mile bike ride takes things to the next level. And as we've seen time and ti...

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Written by

Mark Allen

Mark Allen has to be in any conversation about the greatest triathlete of all time. A six-time IRONMAN World Champion, he won every other title that mattered in the sport and dominated like few others

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