Mark Kleanthous

Mark Kleanthous

Mark is an athlete and coach, with 500+ triathlon finishes to his name. He's also the author of 'The Complete Book of Triathlon Training'.

Mark is a founder member of the British Triathlon Association and a performance coach. He's completed over 500+ triathlons, 70+ marathons, 39 Ironmans, 2 double Irons and 1 Triple Iron. He holds motivational talks and is the author of 'The Complete Book of Triathlon Training'.

Recent articles by Mark Kleanthous

70.3 race-day nutrition advice

Confused about nutrition for your first 70.3 triathlon? Ironman coach Mark Kleanthous has all the advice you need to conquer the middle distance
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Ironman triathlon: how long does it take to train for one if you're starting from scratch?

Unfit but wondering if you can do an Ironman? Mark Kleanthous explains how long it takes to train for one safely, without putting your body at risk
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How much bike training do you need to do for an Ironman?

With 180km of riding to complete in an Ironman race, just how much time on the bike should you be doing in training? Ironman coach Mark Kleanthous has the answers
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How long should your off-season last if you’re an Ironman triathlete?

Coming to the end of your Ironman season and wondering how long you should take off without compromising next year's performance? Mark Kleanthous explains all
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How often should I replace my triathlon gear?

Wondering how long your triathlon gear should last and how often you should replace your tri kit? Mark Kleanthous explains
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Ironman run: How can I stop constantly needing to go to the loo?

Fed up with needing to go to the loo every 10-15 minutes on the Ironman run and not sure what you're doing wrong? Mark Kleanthous has this advice
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Can I do an Ironman in trainers and flat pedals?

Wondering if it's okay to do an Ironman bike leg without clipping in? It is, says Mark Kleanthous, but you won't be as efficient
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Running: what are the advantages of interval training?

Always running at one pace is a common mistake. Ironman legend Mark Kleanthous explains why he recommends incorporating some high-intensity interval training sessions into your training.
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Is a road bike or triathlon bike best for a hilly Ironman?

Mark Kleanthous explains how to decide which bike is most suitable for the Ironman course you’re racing.
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