Just finished a biography of John Rae ("Fatal Passage" by Ken McGoogan), and was absolutely astounded. I had never heard of the guy, but he has got to be one of the all-time master hikers.
Long story short, he wandered the arctic region of Canada in the early 1800s, usually at the behest of the Hudson Bay Company. He discovered the fate of the long-lost Franklin Expedition to find the Northwest Passage, and was demonized in England for it - probably why he's not in any history books. In his years wandering Canada, he covered thousands of miles on snowshoes - usually alone - and didn't think twice about it. Learned how to survive the country and do it right from the Inuit, but no one would listen to the learnings that he tried to pass on. Very similar to the general reaction to the use of dogs in the Antarctic by Amundsen.
Anyway, I'd never heard of the guy till I picked this book up, and was blown away. Heartily recommended for those who enjoy the genre.