I may not spell this book right but, the longest for me was, Sacajawia or something like that. Historical fiction base on Lewis and Clark experdition.
There have been a few others from the author Stephen King. But, I don't read him any more.
The Stand by Stephen King was a pretty long individual novel that I read.
I also had the complete Lord of The Rings in an individual novel which was long, but that could be classed as three books just merged together.
I'm gonna go with Moby Dick, I don't know how many pages it has but it is easily the LARGEST book on my shelf/that I've read. The only larger ones are compilations, like the complete works of Shakespeare etc.
Actually, does the Bible count? Because that would probably be the longest I've read.
Page count I think my longest book was.. 1500-2000 pages or so. Something like that
Either Gone with the Wind.
Or the Bible. Does that count?