Hope to race in Kona one day? Crush the course with these tips from the world’s fastest age grouper.

Hope to race in Kona one day? Crush the course with these tips from the world’s fastest age grouper.

This article was originally published in the Sep/Oct 2012 issue of Inside Triathlon magazine.

In 2011, Bas Diederen of the Netherlands finished the Ironman World Championship in 8:48:44, 26th overall and the first amateur. It was only his first attempt in Kona, but he raced it “about a million times in my mind during training,” he says. The mental preparation paid off.

While he was glad to have been the fastest age grouper, the 31-year-old still didn’t feel very strong in the race. “At least not as strong as I hoped,” he says. “I’m a good swimmer and runner but if you look at the splits for the age groups, I’m never in the top five. And that’s how my race felt—not really strong but a consistent, steady pace.”

You wouldn’t know it from his finish time, but the 6-foot-1, 174-pound Diederen also struggled with the Big Island heat: “I took extra salt and used arm coolers,” he says. “I tried to get as much ice in my suit as possible. I knew I was going to have trouble on the run because I’m a heavy athlete, but it was worse than I anticipated.”

Diederen, who lives in Susteren, Netherlands, has raced triathlon since 1999, coming from a swimming background (as a breast stroker, “so no advantage for triathlon”). His time is now split among working as an exercise physiologist, coaching cycling at the University of Maastricht in the student sports division, training 20-25 hours per week, working with up-and-coming ITU athletes and coaching younger athletes on Team4Talent to reach their Olympic goals.

He stuck to racing short-course in 2012 (and won the sprint-distance national championship in Groningen), so you he didn’t compete in Kona in 2012. But he plans to come back to Hawaii since he’s now racing as a professional. “If I do, I want to have that heat management issue under control,” he says. Until then, here’s his advice if you’re racing on the Big Island.

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