Books like Readings in Moral Philosophy
Jonathan Wolff
Readings in Moral Philosophy is 688 pages, about 12 hours 37 minutes at 250 words a minute.
10 books to read next
How long each takes
The Elements of Moral Philosophy 3.9 h 
The Right Thing to Do 5.6 h 
Ethics 9.1 h 
Great Traditions in Ethics 6.8 h 
Morality Play 2.9 h 
Ethical Choices 7.6 h 
The Moral Life 17.3 h 
The Moral of the Story 11.4 h 
The Right Choice 6.2 h 
Contemporary Moral Arguments 13.3 h Bar height shows length. Estimated at 250 words a minute.