A World Forsaken: The Conclusion of the Journey in the Times of the Living Dead (zombie/walking dead/apocalypse) by Brian Kittrell
Product description for A World Forsaken, 41,000 words:
From the author of the Survivor Chronicles and the Mages of Bloodmyr comes the conclusion of the Survivor Chronicles series: A World Forsaken.
In the final book of the series, Nadene and her friends must race across the remaining southwestern United States in hopes of finding safety. Hundreds of millions of undead approach from the east, and raiders roam the west. What once was the promise of a life without the hungry dead lurking in every shadow quickly becomes more dangerous than they ever imagined.