Peter Hillary has written and co-written several books, including: A Sunny Day in the Himalayas (1980); First Across the Roof of the World: The First-ever Traverse of the Himalayas, 5,000 Kilometres from Sikkim to Pakistan (with Graham Dingle, 1982); Two Generations (with his father, Sir Edmund Hillary, 1984); Ascent: Two Lives Explored - The Autobiographies of Sir Edmund and Peter Hillary (also with his father, 1986); Rimo: Mountain on the Silk Road (1992); Bridgit was Bored (a children's book written with his first wife, Ann Moorhead, 1992); and In the Ghost Country: A Lifetime Spent on the Edge (with John Elder, 2003).