Duchess of Cambridge, Prince William and Prince Harry Compete To Be Crowned Winner In Charity Running Race

Kate Middleton, Prince William and Prince Harry showed off their competitive streaks during a sprint against each other over the weekend

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It was only a month ago that Kate Middleton was providing hilarious zingers about Prince William's ambition to run a marathon.

And now it seems the Duchess of Cambridge has decided to take on her husband and brother-in-law, Prince Harry, in a race to be crowned Britain's best 'royal runner'.

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On Sunday, the trio raced a 50-metre sprint at London's Queen Elizabeth Olympic Park to promote their mental health campaign, Heads Together.

Cheered on by 150 volunteers of the charity – who are currently training for April's 2017 Virgin Money London Marathon – footage of the relay run shows Harry sprinting off ahead of his family members to take first place, while his brother takes second and Kate Middleton follows shortly behind.

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The Duchess – who wore on-trend red puffa jacket and jeans for the race – was spotted embracing her husband shortly after the race.

According to news.com.au, Prince William mentioned a bad hamstring might be the reason for him losing the race while the women's marathon world-record holder Paula Radcliffe allegedly joked shortly after the race that the second-in-line to the throne should have been disqualified for straying into Kate's running lane.

Prince Harry's appearance at the race comes days after he was spotted out on a date in London with girlfriend, actress Meghan Markle.

As an avid sportswoman herself, we wonder if Meghan would've have beaten her royal beau in the race...

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