Books like Children of Time
Adrian Tchaikovsky
Children of Time is 616 pages, about 11 hours 18 minutes at 250 words a minute.
12 books to read next
How long each takes
Contact 7.9 h 
Swan Song 17.5 h 
Spin 9.0 h 
Death's End 13.3 h 
Seveneves 15.8 h 
Blindsight 7.0 h 
Axis 5.6 h 
Expedition 3.6 h 
Ghosts of Onyx 7.0 h 
Babylon’s Ashes 10.0 h 
Children of the Mind 7.0 h 
The Man Who Fell to Earth 3.4 h Bar height shows length. Estimated at 250 words a minute.