Books like Reality Is Not What It Seems
Carlo Rovelli
Reality Is Not What It Seems is 261 pages, about 4 hours 47 minutes at 250 words a minute.
6 books to read next
How long each takes
The Black Hole War 8.8 h 
Fundamentals 5.0 h 
Space-time and Beyond 3.2 h 
All Tomorrow's Parties 5.3 h 
Time Travel in Einstein's Universe 5.4 h 
The Greatest Story Ever Told - So Far 6.2 h Bar height shows length. Estimated at 250 words a minute.