Books like Doorways in the Sand
Roger Zelazny
Doorways in the Sand is 196 pages, about 3 hours 36 minutes at 250 words a minute.
12 books to read next
How long each takes
Dune Messiah 5.1 h 
The Martian Chronicles 4.8 h 
The Complete Robot 10.2 h 
Robot Dreams 8.2 h 
Citizen of the Galaxy 5.1 h 
Way Station 3.9 h 
Dandelion Wine 4.3 h 
Carmina 3.9 h 
The Goblin Reservation 3.5 h 
Satirae 5.7 h 
The Ship of Ishtar 4.9 h 
A Princess of Mars 3.2 h Bar height shows length. Estimated at 250 words a minute.