Books like The Lord of the Rings. Appendices
J. R. R. Tolkien
The Lord of the Rings. Appendices is 180 pages, about 3 hours 18 minutes at 250 words a minute.
7 books to read next
How long each takes
Ship of Magic 12.8 h 
The Lord of the Rings 2.6 h 
Tolkien and the Great War 7.3 h 
Taltos 8.9 h 
The Road to Middle-Earth 4.6 h 
River of Blue Fire 12.4 h 
The Fortress of the Pearl 4.4 h Bar height shows length. Estimated at 250 words a minute.