Books like Raiders of Gor
John Norman, Ralph Lister
Raiders of Gor is 332 pages, about 6 hours 5 minutes at 250 words a minute.
12 books to read next
How long each takes
The Great Hunt 12.3 h 
Red Prophet 5.9 h 
Moon Called 5.6 h 
The Eye of the World 14.4 h 
The Crimson Shadow 14.1 h 
Circe 7.4 h 
The Black Swan 6.9 h 
Cloud Atlas 10.0 h 
A Darker Shade of Magic 7.3 h 
The Crystal Shard 6.3 h 
The Starless Sea 9.4 h 
The Shadow Rising 17.6 h Bar height shows length. Estimated at 250 words a minute.