Books like The People of Sparks
Jeanne DuPrau
The People of Sparks is 340 pages, about 6 hours 14 minutes at 250 words a minute.
12 books to read next
How long each takes
Steelheart 7.6 h 
Calamity 7.9 h 
Eragon 10.6 h 
Refugee Boy 5.3 h 
Legend 5.7 h 
Prodigy 7.3 h 
The Battle for WondLa 8.8 h 
Skyward 9.7 h 
Shadowcaster 10.1 h 
I Am Number Four : The Lost Files 2.4 h 
Oakleaf Bearers 5.0 h 
The Burning Bridge 5.1 h Bar height shows length. Estimated at 250 words a minute.