Second vote on the Long Walk book. lent my copy to a Dutchman and haven't seen it since. Didn't they make a film based upon it recently? I'm so out of touch with films etc.
Robinson Crusoe also.
Jupiter's Travels is an interesting read. About a bloke who rode around the world on a Triumph in 1973. I'm reading it again and enjoying it as much. Ewan Macgregor and Charlie Boreman did the same thing with 2 support vehicles and a doctor in tow back in 2005 I think. The book's enjoyable enough too it's called The Long Way Round.
Can't comment about The Road. Heard some nasty goings on in that which put me right off getting a freebie copy in the book gift it on thread.