Catherine, Princess of Wales completes the National Three Peaks Challenge solo to raise funds for The Royal Marsden Cancer Charity and makes a private donation to support an 11-year-old paraplegic boy.She climbs Ben Nevis, Scafell Pike and Snowdon inside 24 hours, covering about 23 miles on foot, gaining roughly 10,050 ft of ascent and driving roughly 462 miles between locations with Mountain Rescue support.William, Prince of Wales supports at the finish without joining the climbs; Catherine shares family photos that show Prince George notably tall and says donations will enhance holistic care at The Royal Marsden Cancer Charity.