Books like Van Til's Apologetic
Greg L. Bahnsen
Van Til's Apologetic is 764 pages, about 14 hours at 250 words a minute.
7 books to read next
How long each takes
Pensées 6.5 h 
The Language of God 5.6 h 
The Everlasting Man 5.0 h 
Reasonable Faith 7.0 h 
Summa Contra Gentiles 10.3 h 
The Truth of the Christian Religion 6.3 h 
Peace of Soul 5.4 h Bar height shows length. Estimated at 250 words a minute.