After two days in London last week, schlepping along the underground and the miles in between with a heavy overnight bag, I thought I’d done very well. Until I read about 81-year-old Ian Waddell, who’d covered 17 miles and a 5,000 ft ascent in the South Wales Three Peaks Challenge, using sticks and crutches because he has osteoarthritis and joint pain. He’s also had hip and knee surgery.