Books like A Reaper at the Gates
Sabaa Tahir
A Reaper at the Gates is 675 pages, about 12 hours 23 minutes at 250 words a minute.
9 books to read next
How long each takes
Wicked 8.7 h 
Damián 8.7 h 
2 States 4.9 h 
Matahari 7.3 h 
Bones & All 5.6 h 
Blood Canticle 7.5 h 
Time and Again 9.4 h 
Heart of a Warrior 6.8 h 
Definitely Dead 6.4 h Bar height shows length. Estimated at 250 words a minute.