Books like A Ring of Endless Light
Madeleine L'Engle
A Ring of Endless Light is 330 pages, about 6 hours 3 minutes at 250 words a minute.
6 books to read next
How long each takes
Dolphins 52 min 
Dolphin Adventure 1.2 h 
Annie and the Old One 48 min 
How They Croaked 3.5 h 
Dolphins and Sharks 2.3 h 
After the Rain 5.3 h Bar height shows length. Estimated at 250 words a minute.