Books like Harry Potter and the Half-Blood Prince
J. K. Rowling
Harry Potter and the Half-Blood Prince is 640 pages, about 11 hours 44 minutes at 250 words a minute.
How long Harry Potter and the Half-Blood Prince takes to read
12 books to read next
How long each takes
Wicca 4.3 h 
The Golden Bough 13.5 h 
Three Books of Occult Philosophy 5.9 h 
Wizard Heir, The 8.7 h 
True Magick 4.6 h 
The Poet X 6.6 h 
A Treasury of Witchcraft 5.0 h 
Religion and the Decline of Magic 13.1 h 
Egyptian Magic 4.3 h 
The Crank Trilogy 35.8 h 
Amulets and Superstitions 10.0 h 
Grimoires 6.8 h Bar height shows length. Estimated at 250 words a minute.