Gregory Benford books in order
18 books in the catalogue, about 137 hours of reading in all; the shortest takes 5 hours and the longest 14 hours.
1 series and 13 standalone books in the catalogue.
Galactic Center Saga
6 books
In the Ocean of Night 6.1 h Across the Sea of Suns length not known
Great Sky River 6.4 h 
Tides of Light 6.8 h 
Furious Gulf 6.1 h 
Sailing Bright Eternity 8.2 h Standalone books
Again, Dangerous Visions 13.9 h 
100 Great Science Fiction Short Short Stories 5.0 h 
Timescape 7.6 h 
Dragon Tales 5.8 h 
Creations 6.4 h 
Great Science Fiction 7.3 h 
Heart of the Comet 9.1 h 
Mathenauts 5.5 h 
The Bradbury Chronicles 6.0 h 
Foundation's Fear 11.4 h 
Bowl of Heaven 7.6 h 
Other Worlds Than These 7.3 h 
Loosed Upon the World 10.9 h