Books like Realms of Tolkien
J. R. R. Tolkien
Realms of Tolkien is 144 pages, about 2 hours 38 minutes at 250 words a minute.
6 books to read next
How long each takes
Barlowe's Guide to Extraterrestrials 2.1 h 
J.R.R. Tolkien 3.8 h 
Barlowe's Guide to Fantasy 1.8 h 
The Encyclopedia of Fantasy and Science Fiction Art Techniques 3.2 h 
Drawing and Painting Fantasy Figures 2.4 h 
The Art of the Discworld 2.4 h Bar height shows length. Estimated at 250 words a minute.