War and Peace by Tolstoy Anna Karenina by Tolstoy The Brothers Karamazov by Dostoevsky Demons by Dostoevsky The Idiot by Dostoevsky David Copperfield by Dickens Little Dorrit by Dickens Nicholas Nickleby by Dickens Bleak House by Dickens Ulysses by Joyce Les Miserables Victor hugo Alsaka, Hawaii, Texas, Chesapeake etcetera by Michener Shogun by James Clavell Lord of the Rings by Tolkien. I consider the trilogy to be a single book. A Fine Balance by Rohinton Mistry There's no shortage of fantasy that goes on longer than 800 pages. George R.R. Martin's A Song of Ice and Fire series has longer novels for example.