The Books Insiderindependent audiobook data
The Thermopylae Protocol by Jacob Holo, David Weber

The Thermopylae Protocol: Audiobook

Book 6 of the Gordian Division series

According to The Books Insider's catalog data, The Thermopylae Protocol runs 14.8 hours as an unabridged audiobook, narrated by Gabriel Vaughan (about 9.9 hours at 1.5× playback speed).

14.8listening hrs
Science Fictionstore shelf
2025released
Free for new listeners

The instrument When will you finish it?

Based on 14.8 hours of listening.

Days to finish The Thermopylae Protocol at common listening paces
Your paceYou'll finish in
30 min / day30 days
1 hour / day15 days
2 hours / day8 days
1 hour / day at 1.5×10 days

Part of The Audiobook Finish-Time Calculator: the same instrument for any audiobook we measure.

What our data says

  • At 14.8 hours, it runs longer than 87% of the 13,269 Science Fiction audiobooks in our catalog.

About as long, on the Science Fiction shelf

1,168 Science Fiction audiobooks in our catalog run within 10% of this length. The most popular on the store:

Computed from 409,794 English-language unabridged audiobooks in The Books Insider catalog (store data read November 3, 2026). Lengths are the store's own running times. Methodology.

About this listen

The Thermopylae Protocol is book 6 of Jacob Holo's Gordian Division series: a 14.8-hour unabridged recording, read by Gabriel Vaughan, released April 29, 2025, on the Science Fiction shelf.

The listen at a glance

Length
14.8 hrs
Narrated by
Gabriel Vaughan
Released
April 29, 2025
Format
Unabridged audiobook
Language
English
Store shelves
Science Fiction
Series
Gordian Division #6
ISBN
9798892748636

How to listen to The Thermopylae Protocol free

New members at audiobooks.com get three free audiobooks with the trial.

Separately, the store's catalog carries more than 10,000 audiobooks that are always free to stream.

Start listening free

Questions listeners ask

How long is The Thermopylae Protocol as an audiobook?

The Thermopylae Protocol runs 14.8 hours unabridged. At 1.5× speed that drops to roughly 9.9 hours.

Is The Thermopylae Protocol free as an audiobook?

Yes, for new listeners: the trial starts you with three free audiobooks.

Who narrates The Thermopylae Protocol?

The Thermopylae Protocol is narrated by Gabriel Vaughan.

Is The Thermopylae Protocol worth listening to at 1.5× speed?

At 1.5× you'd finish in about 9.9 hours, saving 4.9 hours.