It's been a busy week for Prince William, who is celebrating his 39th birthday today after enjoying some Father's Day festivities over the weekend.
While the duke is hopefully getting some downtime for his bday, he was able to enjoy some family bonding yesterday as he spent the afternoon with his two older children, George (7) and Charlotte (6). The pair helped Prince William kick off the Father's Day half-marathon hosted by the queen at Sandringham Estate in Norfolk.
Photos from the event can be seen below in a video courtesy of Royal Insider News.