Books like Writing Magic
Gail Carson Levine
Writing Magic is 176 pages, about 3 hours 14 minutes at 250 words a minute.
9 books to read next
How long each takes
Diary of a Wimpy Kid Do-It-Yourself Book 2.0 h 
Scary Stories 35 min 
Hole in My Life 3.7 h 
Guts 2.7 h 
Wimpy Kid 4.1 h 
You Wouldn't Want to Live Without Writing 40 min 
How To Draw Manga Volume 39 2.6 h 
Who Was Dr. Seuss? 1.9 h 
Dr. Seuss 26 min Bar height shows length. Estimated at 250 words a minute.