I have walked it once and run the Three Peaks race. The race can have varied weather conditions, a poor chap died after going the wrong way off Ingleborough due to fog and snow I believe. When I did it they had put marker tape on the top of Ingleborough but the day was very hot, a bit like today, 70 retired so I was told, runners were being attended to by medics. I wasn't affected to much suffice say that I was very agitated at the finish, didn't know whether to sit or stand, eat something sweet or savoury, it took me about half an hour to settle down.