Books like Rama II
Arthur C. Clarke, Gentry Lee
Rama II is 496 pages, about 9 hours 6 minutes at 250 words a minute.
12 books to read next
How long each takes
Foundation 4.4 h 
Contact 7.9 h 
Record of a Spaceborn Few 6.6 h 
The Foundation Trilogy 11.1 h 
Sphere 7.1 h 
Second Foundation 4.4 h 
Anathem 17.2 h 
A Fire Upon the Deep 11.1 h 
Foundation and Earth 9.2 h 
Altered Carbon 8.8 h 
Prelude to Foundation 8.1 h 
A Deepness in the Sky 14.5 h Bar height shows length. Estimated at 250 words a minute.