Alastair Reynolds books in order
25 books in the catalogue, about 223 hours of reading in all; the shortest takes 4 hours and the longest 14 hours.
3 series and 17 standalone books in the catalogue.
Inhibitor Cycle
4 books 1 
Revelation Space 10.3 h 
Absolution Gap 12.3 h 4 
Inhibitor Phase 8.4 h
Revelation Space 10.3 h 2 Redemption Ark length not known
3 Absolution Gap 12.3 h 4 Inhibitor Phase 8.4 h A Prefect Dreyfus Emergency
4 books
Chasm City 11.2 h 1 The Prefect length not known
2 
Elysium Fire 7.9 h 3 Machine Vendetta length not known
Poseidon's Children
3 books
Standalone books
Beyond the Aquila Rift 14.4 h 
Diamond Dogs, Turquoise Days 4.3 h 
The Medusa Chronicles 7.6 h 
Century Rain 9.6 h 
Pushing Ice 9.6 h 
Galactic North 7.0 h 
Zima Blue and Other Stories 5.4 h 
The Prefect 7.6 h 
House of Suns 9.4 h 
Terminal World 9.1 h 
Other Worlds Than These 7.3 h 
Slow Bullets 3.5 h 
Revenger 7.8 h 
Infinite Stars 9.9 h 
The Best of Subterranean 13.8 h 
Bone Silence 10.1 h 
Eversion 5.6 h