Books like A Call to Duty
Timothy Zahn, David Weber, Eric Michael Summerer
A Call to Duty is 400 pages, about 7 hours 20 minutes at 250 words a minute.
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How long each takes
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Cibola Burn 11.1 h 
Star Wars 7.0 h 
The Cole Protocol 6.8 h 
Halo 7.0 h 
The Stars Are Legion 7.3 h 
The Last Colony 5.9 h 
Star Wars - Catalyst - A Rogue One Novel 7.9 h 
On Basilisk Station 7.8 h Bar height shows length. Estimated at 250 words a minute.