Books like Project Orion
George Dyson
Project Orion is 345 pages, about 6 hours 20 minutes at 250 words a minute.
6 books to read next
How long each takes
2010, Odyssey Two 5.6 h 
The Double Helix 3.7 h 
Forty Studies That Changed Psychology 6.2 h 
Bonk 5.9 h 
Syntactic Structures 2.2 h 
Maldoror 6.3 h Bar height shows length. Estimated at 250 words a minute.