Books like A History of the Christian Church
Williston Walker
A History of the Christian Church is 624 pages, about 11 hours 26 minutes at 250 words a minute.
8 books to read next
How long each takes
The Name of the Rose 9.8 h 
Slave Religion 7.4 h 
A History of Christianity 21.3 h 
The Serpent and the Goddess 4.9 h 
Canaan Land 2.8 h 
Turning Points, 6.3 h 
Pagans and Christians 14.7 h 
Enthusiasm 11.4 h Bar height shows length. Estimated at 250 words a minute.