Harborough Athlete Attempts Duathlon World Record
Written by HFM News on 28th November 2025
A Market Harborough man is aiming to break a world record by completing the most duathlons in seven days.
Ethan Marsh begins the endurance challenge tomorrow and will need to cycle 100 miles and run 36 miles every day to beat the existing record.
Ethan Marsh
The current record stands at 23 consecutive duathlons, meaning he will have to push his limits throughout the week-long attempt.
Ethan, who has previously raised thousands of pounds for charity through running challenges, has been liaising with Guinness World Records ahead of the record attempt.
He spoke to HFM:
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