Dan Simmons books in order
28 books in the catalogue, about 284 hours of reading in all; the shortest takes 5 hours and the longest 22 hours.
3 series and 18 standalone books in the catalogue.
Hyperion Cantos
5 books 1 
Hyperion 8.8 h 2 
The Fall of Hyperion 10.3 h 
The Rise of Endymion 11.9 h
Hyperion 8.8 h 2 The Fall of Hyperion 10.3 h 3 Endymion length not known
4 The Rise of Endymion 11.9 h Orphans of the Helix length not known
Seasons of Horror
4 books
Joe Kurtz
3 books
Standalone books
Song of Kali 5.8 h 
Night Visions 5 5.0 h 
Carrion Comfort 15.4 h 
Dark Visions 6.0 h 
The Hollow Man 5.9 h 
Endymion 10.8 h 
Hyperion Cantos 21.9 h 
Darker Masques 10.5 h 
Ilium 10.9 h 
Olympos 14.4 h 
The Terror 14.1 h 
The Living Dead 8.9 h 
Drood 17.7 h 
The Vampire Archives 18.9 h 
Darkness 8.6 h 
Flashback 10.2 h 
The Abominable 12.2 h 
Flight or Fright 6.3 h