Books like The Sky Inside
Clare B. Dunkle
The Sky Inside is 235 pages, about 4 hours 19 minutes at 250 words a minute.
12 books to read next
How long each takes
The Maze Runner 6.9 h 
Vanishing Girls 6.3 h 
The One 5.9 h 
Four 4.8 h 
Saving the World and Other Extreme Sports 7.7 h 
Six of Crows 9.4 h 
The Hunger Games 7.3 h 
Legendary 8.3 h 
Angel 5.9 h 
The 100 5.5 h 
Fang 5.7 h 
Max 4.9 h Bar height shows length. Estimated at 250 words a minute.