Excluding 1-3 hour abridged adaptation, there are still several decent looking TOS Star Trek audiobooks on Audible.com. Currently there are 12 full-length (8-12 hours) TOS audiobooks on Audible.com, plus another scheduled for 11/10/20.

There were 3 Original Series novels that had accompanying audiobooks scheduled to release in 2020:

3 TOS books with dual release of print and audiobooks in 2020 isn’t a bad pace!

Upcoming Release

Standalone Full-Length Audiobooks

Listed from highest to lowest rating. All ratings are as of Oct. 28, 2020.

Star Trek: Legacies Trilogy

Prey, a TOS/TNG Crossover Trilogy