Books like Petrolio
Pier Paolo Pasolini
Petrolio is 591 pages, about 10 hours 50 minutes at 250 words a minute.
6 books to read next
How long each takes
My Secret Life 9.4 h 
The Porn Trap 5.6 h 
Choke 5.6 h 
Sex Addiction 101 4.4 h 
Dans le Jardin de L'ogre 4.1 h 
Treating Pornography Addiction 3.2 h Bar height shows length. Estimated at 250 words a minute.