A Contest of Principles: Audiobook
Part of Star Trek: The Original Series
According to The Books Insider's catalog data, A Contest of Principles runs 13.5 hours as an unabridged audiobook, narrated by Robert Petkoff (about 9 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 13.5 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 27 days |
| 1 hour / day | 14 days |
| 2 hours / day | 7 days |
| 1 hour / day at 1.5× | 9 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 13.5 hours, it runs longer than 83% of the 13,269 Science Fiction audiobooks in our catalog.
More narrated by Robert Petkoff
Robert Petkoff narrates 385 unabridged audiobooks in our catalog, 4,502 hours in all.
About as long, on the Science Fiction shelf
1,480 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 Contest of Principles is an audiobook by Greg Cox: a 13.5-hour unabridged recording, read by Robert Petkoff, released November 10, 2020, on the Science Fiction shelf.
The listen at a glance
- Length
- 13.5 hrs
- Narrated by
- Robert Petkoff
- Released
- November 10, 2020
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Science Fiction
- Series
- Star Trek: The Original Series
- ISBN
- 9781797111704
How to listen to A Contest of Principles 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 Contest of Principles as an audiobook?
A Contest of Principles runs 13.5 hours unabridged. At 1.5× speed that drops to roughly 9 hours.
Is A Contest of Principles free as an audiobook?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates A Contest of Principles?
A Contest of Principles is narrated by Robert Petkoff.
Is A Contest of Principles worth listening to at 1.5× speed?
At 1.5× you'd finish in about 9 hours, saving 4.5 hours.