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June 29, 2026 / 6:38 AM EDT

/ CBS News

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London - Catherine, the Princess of Wales, has completed the U.K.'s National Three Peaks Challenge, climbing the highest peaks in Scotland, England and Whales in 24 hours, to raise awareness and money for a cancer charity. Kate, as the 44-year-old royal is commonly known, was diagnosed with an unspecified form of cancer in March 2024. She announced in early 2025 that she was in remission after undergoing chemotherapy. In a social media post on Sunday, she and Prince William's official home Kensington Palace said the Princess of Wales had undertaken the climb not just for the physical challenge, but also "as a chance to explore life beyond diagnosis and to give something back."