Hmmm. Good question. I guess a 300 page book might take me a fair few hours to read, if I don't read it all in one go. I love reading, always have. I even received an award for "best reader" in my 3rd grade class.
However, that worked against me as I would always be scolded for "pleasure reading" as my mother called it, often during Math class, which I found rather boring.