Books like World Religions
Willard Oxtoby
World Religions is 554 pages, about 10 hours 9 minutes at 250 words a minute.
6 books to read next
How long each takes
The Physiological Basis of Medical Practice 28.5 h 
The Illustrated World's Religions 4.7 h 
The Religious Experience of Mankind 10.9 h 
A History of Religious Ideas 11.3 h 
World Religions Today 10.3 h 
The Meaning and End of Religion 6.2 h Bar height shows length. Estimated at 250 words a minute.