The latest John Connolly Charlie Parker tome “A Book of Bones”. It’s some 700 pages!! I have a feeling it may be the ultimate one too, given its size. It may take me some time to find out.
Ha, be thankful you're not into the Sci-Fi/Fantasy genre - 700 pages is trifling in that arena.
The presence of this thread just made me laugh on that front incidentally as I am technically partway through reading A Song of Ice and Fire by George R. R. Martin. I am one of a mere 600 people who bought the first one - entitled rather famously these days 'A Game of Thrones' - in 1996 - earning me eventually a nice fat £300 on eBay when I sold it the other year (
- not bad for a book wot I bought almost at random once). It is now a gobsmacking EIGHT years since he wrote the last one and his darn* TV series of it took over. I think I'll finish it when the next blue moon coincides with a month of Sundays
*Still the TV series is rather spiffing - despite knowing everything that was going to happen in the early series. This of course may now reverse since the TV series has long ago gone way past where it is at in the books - though with rather drastic changes to personnel, timelines and plot at times.
So currently that's at about 5 books of 800+ pages. If you REALLY want to go for it, try Robert Jordan't Wheel of Time which finally ended up at 14 volumes at about 800 pages each on average. He did a GRRM and never finished it mind you - took him so long he actually died before he finished it - they had to get someone in to finish it.