Books like The Journal of Curious Letters
James Dashner
The Journal of Curious Letters is 432 pages, about 7 hours 55 minutes at 250 words a minute.
12 books to read next
How long each takes
A Wrinkle in Time 3.9 h 
100 Cupboards 5.6 h 
The Gardener 44 min 
The Last Star 6.6 h 
A Swiftly Tilting Planet 5.1 h 
P. S. Longer Letter Later 4.3 h 
P. S. Be Eleven 5.3 h 
Clementine's Letter 2.9 h 
Ketchup Clouds 4.8 h 
InterWorld 4.4 h 
Snail Mail No More 5.4 h 
Playing Beatie Bow 3.6 h Bar height shows length. Estimated at 250 words a minute.