Books like Why Buddhism Is True
Robert Wright
Why Buddhism Is True is 321 pages, about 5 hours 53 minutes at 250 words a minute.
9 books to read next
How long each takes
Siddhartha 2.6 h 
10% Happier 4.4 h 
Opening the Door of Your Heart 4.4 h 
Cutting Through Spiritual Materialism 4.6 h 
How to Walk 2.3 h 
The Dalai Lama's Book of Wisdom 2.4 h 
Unlocking the Mysteries of Birth and Death 4.0 h 
Joyful Wisdom 5.6 h 
How to Eat 2.3 h Bar height shows length. Estimated at 250 words a minute.