Some of Paulsen's most well-known books are the Hatchet series, although he has published many other popular novels including Dogsong, Harris and Me, and The Winter Room, which won the Newbery Honor. Woodsong and Winterdance are among the most popular books about the Iditarod.
Paulsen competed in the 1983 and 1985 Iditarod races. In 1990, because of angina, he gave up dog sledding, which he has described as the most difficult decision he has ever made. After more than a decade spent sailing all over the Pacific, Paulsen got back into dog sledding in 2003. In 2005, he was scheduled to compete in the 2005 Iditarod after a 20-year absence, but he withdrew shortly before the start of the race. He participated in the 2006 Iditarod, but scratched after two days.