Princess Kate took on an extreme physical test over the weekend by completing the National Three Peaks Challenge, climbing more than 10,000 feet to reach the top of the three highest peaks in the U.K. in 24 hours. She was greeted by Prince William and their children at the finish, but what wasn't revealed until now is that Kate's brother, James Middleton, climbed alongside the Princess of Wales—and he fulfilled a promise he made when she was diagnosed with cancer in 2024.
Fellow hiker Phillip Tebajjwa shared a video on his Instagram Story showing Princess Kate ascending from the top of Mount Snowdon, the highest mountain in Wales, while beaming and holding hands with her brother while his golden retriever, Mabel, runs behind.