Books like The Hitchhiker's Guide to the Galaxy
Douglas Adams
The Hitchhiker's Guide to the Galaxy is 216 pages, about 3 hours 58 minutes at 250 words a minute.
12 books to read next
How long each takes
Willful Child 6.3 h 
And Another Thing… 6.2 h 
Gateway 5.7 h 
Contact 7.9 h 
Out of the Silent Planet 3.2 h 
2010, Odyssey Two 5.6 h 
The Collapsing Empire 6.2 h 
Tiamat's Wrath 10.0 h 
The Algebraist 9.2 h 
To Be Taught, If Fortunate 2.8 h 
Sarek 7.9 h 
Star Trek - Log Five 3.6 h Bar height shows length. Estimated at 250 words a minute.