Prince William Gets Water Splashed at London Marathon PHOTO

April 24, 2017 8:32 AM EDT

Prince William had the most fun of anyone at Sunday’s London marathon.

William and Kate Middleton stationed themselves at the finish line to hand out water bottles to thirsty runners. One runner — the day’s true winner — splashed William in the face with his water. Whether the splash was purposeful is unknown — but just look at the Prince’s face laughing it off.

Prince Harry also attended to cheer on the 700-plus runners racing for Heads Together, the three royals’ mental health campaign, which “aims to change the national conversation on mental health and well-being, and is a partnership with inspiring charities with decades of experience in tackling stigma, raising awareness, and providing vital help for people with mental health challenges,” according to the website.

See the photos capturing Prince William, an excellent sport, below.

Catherine, Duchess of Cambridge with Prince William, Duke of Cambridge as he gets squirted with water at a water station during the 2017 Virgin Money London Marathon in London, England, on April 23, 2017.

Mark Cuthbert—Getty Images

LONDON, UNITED KINGDOM - APRIL 23: (EMBARGOED FOR PUBLICATION IN UK NEWSPAPERS UNTIL 48 HOURS AFTER CREATE DATE AND TIME) Prince William, Duke of Cambridge is squirted with water as he & Catherine, Duchess of Cambridge hand out water to runners taking part in the 2017 Virgin Money London Marathon on April 23, 2017 in London, England. The Heads Together mental heath campaign, spearheaded by The Duke & Duchess of Cambridge and Prince Harry, is the marathon's 2017 Charity of the Year. (Photo by Max Mumby/Indigo/Getty Images)

Max Mumby—Getty Images