A Mighty Fortress: Audiobook
Book 4 of the Safehold series
According to The Books Insider's catalog data, A Mighty Fortress runs 35.6 hours as an unabridged audiobook, narrated by Jason Culp (about 23.7 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 35.6 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 72 days |
| 1 hour / day | 36 days |
| 2 hours / day | 18 days |
| 1 hour / day at 1.5× | 24 days |
You'll finish in – by –
Part of The Audiobook Finish-Time Calculator: the same instrument for any audiobook we measure.
What our data says
- At 35.6 hours, it runs longer than 99% of the 13,269 Science Fiction audiobooks in our catalog.
Catching up on Safehold
This is book 4. Books 1 to 3 run 79.8 hours before it; books 1 to 10 run 298.6 hours in all.
| Book | Title | Length |
|---|---|---|
| 1 | Off Armageddon Reef | 30 hrs |
| 2 | By Schism Rent Asunder | 25.3 hrs |
| 3 | By Heresies Distressed | 24.5 hrs |
| 4 | A Mighty Fortress | 35.6 hrs |
| 5 | How Firm a Foundation | 28.5 hrs |
| 6 | Midst Toil and Tribulation | 28.5 hrs |
| 7 | Like a Mighty Army | 27.6 hrs |
| 8 | Hell's Foundations Quiver | 31.7 hrs |
| 9 | At the Sign of Triumph | 34.5 hrs |
| 10 | Through Fiery Trials | 32.5 hrs |
More narrated by Jason Culp
Jason Culp narrates 245 unabridged audiobooks in our catalog, 2,724 hours in all.
About as long, on the Science Fiction shelf
48 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
A Mighty Fortress is book 4 of David Weber's Safehold series: a 35.6-hour unabridged recording, read by Jason Culp, released April 13, 2010, on the Science Fiction shelf.
The listen at a glance
- Length
- 35.6 hrs
- Narrated by
- Jason Culp
- Released
- April 13, 2010
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Science Fiction
- Series
- Safehold #4
- ISBN
- 9781427209016
How to listen to A Mighty Fortress 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 freeQuestions listeners ask
How long is A Mighty Fortress as an audiobook?
A Mighty Fortress runs 35.6 hours unabridged. At 1.5× speed that drops to roughly 23.7 hours.
Is A Mighty Fortress free as an audiobook?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates A Mighty Fortress?
A Mighty Fortress is narrated by Jason Culp.
Is A Mighty Fortress worth listening to at 1.5× speed?
At 1.5× you'd finish in about 23.7 hours, saving 11.9 hours.