Books like Riders of the Purple Sage
Zane Grey
Riders of the Purple Sage is 334 pages, about 6 hours 7 minutes at 250 words a minute.
12 books to read next
How long each takes
Escape 7.8 h Breaking Free 5.6 h 
Flint 3.4 h 
Sister Wives 5.0 h The Polygamist's Daughter 5.8 h 
The 19Th Wife 9.7 h 
Shattered Dreams 7.3 h 
The Sound of Gravel 6.5 h 
Of Mice and Men & Cannery Row 4.8 h 
The Prince and the Pauper 4.7 h 
Sweet Thursday 4.8 h 
Novels 17.4 h Bar height shows length. Estimated at 250 words a minute.