Books like Night Train to Rigel
Timothy Zahn
Night Train to Rigel is 349 pages, about 6 hours 24 minutes at 250 words a minute.
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How long each takes
Leviathan Wakes 10.9 h 
Dark Rivers of the Heart 10.6 h 
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Vanish 7.5 h 
Unseen 8.1 h 
The Forbidden Door 8.8 h 
The Crooked Staircase 10.6 h 
Juggler of Worlds 6.5 h 
Man Who Sold the Moon / Orphans of the Sky 8.5 h Bar height shows length. Estimated at 250 words a minute.