Books like Last and First Men
Olaf Stapledon
Last and First Men is 313 pages, about 5 hours 44 minutes at 250 words a minute.
12 books to read next
How long each takes
The Inheritors 4.3 h 
The Foundation Trilogy 11.1 h 
2001 4.4 h 
The Island of Dr. Moreau 3.1 h 
2010, Odyssey Two 5.6 h 
The Science Fiction Hall of Fame 10.2 h 
Sapiens 8.5 h 
The Last Man 7.8 h 
The Drowned World 3.2 h 
The Midwich Cuckoos 4.0 h 
2061 5.1 h 
The Atrocity Exhibition 2.6 h Bar height shows length. Estimated at 250 words a minute.