Prince William, Prince George and Princess Charlotte started the Sandringham half marathon on Sunday, much to the surprise of runners.
The race consisted of a half marathon, a 5K and a community mile. Runners got a chance to see the Sandringham Estate, where the Royal family spend Christmas.
When it came to starting the event, Prince William William, Prince George and Princess Charlotte gathered around a microphone to set the runners off.
Run Sandringham said, 'We had over 1500 runners take part in the event at Sandringham Estate on Sunday. We were really pleased to see so many people join us for our inaugural event here.
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