Books like Avatar
Bryan Kanietzko, Michael Dante DiMartino
Avatar is 90 pages, about 1 hour 39 minutes at 250 words a minute.
12 books to read next
How long each takes
The Lost Scrolls 1.2 h 
The Earth Kingdom Chronicles 1.8 h 
Pokemon 3.4 h 
Zeus 1.5 h 
The Adventures of Super Diaper Baby 2.4 h 
Redwall 6.5 h 
The Amazing Spider-Man 2.6 h 
Bone 4.3 h 
The Dark Knight Returns 3.6 h 
The Adventures of Captain Underpants 2.4 h 
Buzz Boy and Fly Guy 31 min 
Teen Titans 2.6 h Bar height shows length. Estimated at 250 words a minute.