Books like Never and Forever
Cressida Cowell
Never and Forever is 400 pages, about 7 hours 20 minutes at 250 words a minute.
12 books to read next
How long each takes
The Sea of Monsters 5.2 h 
The Last Olympian 7.0 h 
Race to the Sun 5.5 h 
The Dragonet Prophecy 5.9 h 
Ferno The Fire Dragon 1.7 h 
Wayward Son 7.6 h 
Rising Storm 5.9 h 
Calvin et Hobbes, Tome 12 2.3 h 
Moon Rising 7.1 h 
The Minpins 1.3 h 
The Ickabog 5.6 h 
Lost Continent 6.2 h Bar height shows length. Estimated at 250 words a minute.