Books like Where the World Ends
Geraldine McCaughrean
Where the World Ends is 336 pages, about 6 hours 10 minutes at 250 words a minute.
7 books to read next
How long each takes
The Scottish Chiefs 9.5 h 
In Freedom's Cause 6.2 h 
Island, The 7.0 h 
Abel's Island 2.4 h 
The Sea of Adventure 4.3 h 
The Island Keeper 3.0 h 
Saved at Sea 1.7 h Bar height shows length. Estimated at 250 words a minute.