Books like Mistress Masham's Repose
T. H. White
Mistress Masham's Repose is 233 pages, about 4 hours 16 minutes at 250 words a minute.
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The Secret Garden 4.7 h 
Heartless 9.4 h 
Harry Potter and the Prisoner of Azkaban 7.6 h 
Peter and the Starcatchers 8.3 h 
Inkheart 10.1 h 
Stormbreaker 4.3 h 
A Little Princess 4.1 h 
Midnight Is a Place 5.6 h Bar height shows length. Estimated at 250 words a minute.