Books like Архипелаг ГУЛАГ. T. 3-4
Alexander Solzhenitsyn
Архипелаг ГУЛАГ. T. 3-4 is 712 pages, about 13 hours 3 minutes at 250 words a minute.
9 books to read next
How long each takes
Gulag 12.3 h 
Kolyma Tales 16.4 h 
Fear No Evil 8.0 h 
Escape from Camp 14 4.7 h 
Into the Whirlwind 7.2 h 
The Aquariums of Pyongyang 4.8 h 
A World Apart 4.8 h 
At the Mind's Limits 2.6 h 
Spark of Life 6.9 h Bar height shows length. Estimated at 250 words a minute.