Books like Watchmen
Alan Moore, Dave Gibbons, John Higgins, DC Comics
Watchmen is 421 pages, about 7 hours 43 minutes at 250 words a minute.
12 books to read next
How long each takes
The Boys Vol. 1 2.8 h 
Kick-Ass 4.0 h 
Full Circle 2.3 h 
Final Crisis 8.8 h 
Dallas 4.0 h 
The Unbeatable Squirrel Girl Vol. 1: Squirrel Power 2.4 h 
Deadpool Kills The Marvel Universe 1.8 h 
Batman 2.1 h 
Daredevil 3.8 h 
White Sand 1 2.9 h 
Mooncop 1.8 h 
Superman - Action Comics 4.7 h Bar height shows length. Estimated at 250 words a minute.