The Princess of Wales has been 'blown away' by the 'generous donations' in light of her Three Peaks Challenge, adding the fundraiser motivated her through the demanding walk. Princess Catherine, 44, opened up on her challenging journey, which saw her climb the highest mountains in Scotland, England and Wales within 24 hours, in Overheard at Wimbledon: Royal Special.In the clip, the future queen, wearing a microphone at the All England Lawn Tennis & Croquet Club, sat chatting to former tennis players Debbie Jevans and Tim Henman while watching rising Bri Arthur Fery last week.After Henman asked Catherine about her time completing the gruelling walk, she replied: 'I did it in 24 hours because that was the challenge.'But I think part of the journey was trying to enjoy the process, like the training beforehand, but also making time during the walk to meet people and enjoy the journey rather than just quickly getting to the top.'The weather was atrocious. Everybody got soaked through, but it was a very stoically British thing to do. You know you're soaking wet and everyone's going, 'Come on, we can do it.' She later explained that the support for the Royal Marsden Cancer Charity motivated her throughout, saying: 'I have just been so blown away by all the donations. Everyone's been so generous; that's what keeps you going, it's when you know you're doing it for a good cause. It keeps you going through the harder times.'In another moment, the royal joked around with Henman, before praising Fery's performance as 'seriously good tennis'. The Princess of Wales told Tim Henman that she's been 'blown away' by the support she received for her Three Peaks Challenge while at Wimbledon last weekKate took on the 'personal' expedition to raise money for a cancer charity and 'explore life beyond diagnosis'. She trekked for 23 miles, with a total ascent of more than 10,000ft, and a driving distance of 462 miles between locations.The royal carried out the challenge solo, supported en route by Mountain Rescue, and was greeted at the end by William, her children George, Charlotte and Louis, her parents Carole and Michael Middleton and brother James.Kensington Palace said they believed the expedition was a royal first, with the princess being the first member of the Royal Family to complete the Three Peaks.Kate revealed she had taken on the trek, not only as a physical endeavour, but 'to give something back' and raise awareness of the wider impact of serious illness.The princess was diagnosed with an undisclosed form of cancer early in 2024, for which she underwent chemotherapy, and she announced she was in remission 18 months ago in January 2025.The physical challenge marked the latest milestone for the princess, who has gradually returned to royal duties, and in May, restarted her international travel with a working trip to Italy.Last week, the Princess of Wales ditched the Royal Box to take in the action on Court Number One, as the tennis-mad royal took in the best of the action at Wimbledon. Pictured: Catherine, Princess of Wales attends day four of the 2026 Wimbledon Tennis Championships at the All England Lawn Tennis and Croquet Club on July 2 Catherine sat in the middle of former tennis players Debbie Jevans (left) and Tim Henman (right)Superfan Catherine seemed to be living and breathing the drama on the outside courts last Thursday, gasping and putting her hands over her face during a tense match.The Princess - who is a keen player herself and often hands the trophy to the winner at the end of the tournament - was joined by tennis royalty in SW19, sitting next to the likes of Sir Andy Murray and Tim Henman on the glorious summer day.A tennis aficionado, Kate's search for the most exciting matches at the All England Club took her to Court Number One and Court 18 as she broke with tradition and avoided the prime seats on Centre Court.Earlier in the day, she smiled as she chatted to members of the public who had joined the queue for Wimbledon tickets in the early hours of this morning.She also helped hand out grounds passes to tennis fans, some of whom had camped overnight in Wimbledon Park to secure coveted access to the tournament.Kate posed for selfies with members of the public, affectionately putting her arm around one woman who was holding her phone in one hand and her queue card in the other.She was also overheard telling two attendees 'have a really fun time' as she handed them their tickets.