The Princess of Wales completed the National Three Peaks Challenge over the weekend, conquering Britain’s three highest mountains in under 24 hours to raise funds for The Royal Marsden Cancer Charity.
Catherine, who announced her cancer remission 17 months ago in January 2025, described the gruelling expedition as deeply personal.
“I’m so grateful to be here, to be strong enough to walk these hills,” the princess said in a video released on Sunday.
The future queen undertook the challenge not merely as a test of physical endurance but as an opportunity to give back to the hospital where she received treatment.
She also sought to highlight the broader effects of serious illness on patients and their families.
The princess began her ascent of Ben Nevis on Saturday evening before tackling Scafell Pike in England and finishing with Snowdon in Wales.
In total, she covered 23 miles on foot with a cumulative elevation gain exceeding 10,000 feet. The journey between the three peaks required 462 miles of driving.
Catherine completed the challenge solo, though Mountain Rescue teams provided support throughout her route.
Photographs released by Kensington Palace showed the princess smiling at the misty summit of Ben Nevis, dressed in waterproof gear with a cap beneath her hood and trekking poles strapped to her back.
Her sapphire and diamond engagement ring, once worn by Diana, Princess of Wales, was visible in the images.
In a written message shared on social media, Catherine explained her motivations for taking on the demanding trek.
“I have taken on the National Three Peaks Challenge, not simply as a physical endeavour but as a chance to explore life beyond diagnosis and to give something back,” she wrote.
The princess, who received chemotherapy for an undisclosed form of cancer diagnosed in early 2024, spoke candidly about how the disease affects far more than physical health.
“Cancer doesn’t just affect the body. It changes how you think and feel and profoundly affects every aspect of life. I know this personally,” she said.
Catherine added that the challenges of serious illness “ripple outwards, touching families, friendships, work and the quiet moments we spend alone with our thoughts.”
Prince William and the couple’s three children, Prince George, Princess Charlotte and Prince Louis, were waiting to greet Catherine as she completed the final summit.
Her parents Carole and Michael Middleton, along with her brother James, also joined the family celebration at the finish.
Kensington Palace confirmed they believed the expedition marked a royal first, with Catherine becoming the first member of the Royal Family to complete the Three Peaks Challenge.
The official Royal Family social media account marked the achievement by posting: “Congratulations to The Princess of Wales.”
The princess had previously spoken of meeting “incredible people” living with and beyond cancer during her own journey, adding: “I know personally how difficult that journey is.”
