Books like Swords of Mars
Edgar Rice Burroughs
Swords of Mars is 226 pages, about 4 hours 9 minutes at 250 words a minute.
12 books to read next
How long each takes
Hyperion 8.8 h 
A Deepness in the Sky 14.5 h 
Footfall 9.8 h 
The Star Beast 3.8 h 
Downward to the Earth 3.5 h 
Planet of the Damned 3.1 h 
Galactic Pot-healer 3.5 h 
Death's End 13.3 h 
The Foundation Trilogy 11.1 h 
Foundation and Empire 4.6 h 
The Listeners 4.4 h 
Children Of The Lens 4.7 h Bar height shows length. Estimated at 250 words a minute.