Prince Harry stormed to victory in a relay race against his brother and sister-in-law at a London Marathon training session at the Olympic Park this afternoon.
The Royals were promoting their mental health initiative Heads Together at a training day ahead of the London Marathon.
Despite giving the 100m sprint her best shot, Kate lost out to her brother in-law who came in first followed by William.
Joined by around 150 runners, each royal ran with the relay with a team of runners including athletes Iwan Thomas and Paula Radcliffe and presenter Sian Williams.
The Heads Together organisation aims to change the national conversation on mental well-being to a positive one, and is a partnership between eight charities that provide front-line mental health support.