Both Duchess Kate and William are keen runners, but fellow royal sports enthusiast Mike Tindall revealed that William pips his wife to the post when it comes to sprinting. "She loves running, she can run all day. Engine!" Mike said of the Duchess.
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When asked who out of William and Kate is the faster runner, Mike said that William, nicknamed Willy, is even faster than him. "Willy's quick. I've raced him, he's quick, he has really fast leg speed," said Mike.
Despite being a strong runner, Kate, 37, has previously admitted she could never do a marathon – for one very good reason.
The Duchess was speaking to journalist Bryony Gordon, who asked her if she would be running the London Marathon. Duchess Kate replied: "Oh no, security and all that."
Prince William and Duchess Catherine are ultra-competitive
The Duchess of Cambridge also expressed her doubts over her husband running a marathon. During an outing in support of the Heads Together organisation, William shared with one of the attendees his promise to run a marathon in Kenya.
"I chatted to Prince William, and he has promised that he will run a marathon in Kenya sometime," Good Morning Britain's Sean Fletcher shared.
Mike Tindall said Catherine could 'run all day'
When Sean told Duchess Kate about her husband's news, she offered up the hilarious response: "I’ll believe it when I see it."