This is a tough question because I've read quite a few books with many pages and that were quite heavy. I would have to say the top four would have to be:
Here is this week's question:
What’s the largest, thickest, heaviest book you ever read? Was it because you had to? For pleasure? For school?
Drood by Dan Simmons
Read for pleasure but I have to say this book could have been much shorter.
I Know This Much is True by Wally Lamb
I read this book for pleasure and I enjoyed every page of it!
The Passage by Justin Cronin
I read this book for pleasure and it was so good it didn't even seem like it was that long.
Les Miserables by Victor Hugo
This first time I read this was for school and it was broken up into chunks and it was in French. I re-read it a couple of years ago and I ended up abandoning it because it was quite drawn out and I was too excited to read other things.
Well that's mine. How about you? What is the longest book you have read?