Books like Castle of Wizardry
David Eddings
Castle of Wizardry is 373 pages, about 6 hours 50 minutes at 250 words a minute.
12 books to read next
How long each takes
Wizard's First Rule 10.9 h 
The Time of Contempt 6.1 h 
Mad Ship 14.1 h 
Blood of the Fold 11.0 h 
Soul of the Fire 11.6 h 
The Lady of the Lake 10.2 h 
Temple of the Winds 14.7 h 
The Eyes of the Dragon 7.0 h 
The Third Kingdom 9.7 h 
Ascendance 7.3 h 
Stardust 4.4 h 
By the Sword 11.9 h Bar height shows length. Estimated at 250 words a minute.