Books like The Ruins of Gorlan
John Flanagan
The Ruins of Gorlan is 261 pages, about 4 hours 47 minutes at 250 words a minute.
12 books to read next
How long each takes
Among the Hidden 2.9 h 
Moonrise 5.9 h 
The Safe-Keeper's Secret 4.1 h 
Tweak 6.5 h 
Nightpool 4.6 h 
Nothing but the Truth 3.8 h 
Rose Daughter 5.4 h 
Before We Were Free 3.1 h 
Blue Noon 6.9 h 
Specials 7.0 h 
Scavenger Hunt 3.7 h 
Awakened 5.7 h Bar height shows length. Estimated at 250 words a minute.