Callahan’s Key: Audiobook
Book 2000 of the Callahan series
According to The Books Insider's catalog data, the Callahan’s Key audiobook runs 12.7 hours unabridged, narrated by Barrett Whitener (about 8.5 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 12.7 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 26 days |
| 1 hour / day | 13 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 12.7 hours, it runs longer than 79% of the 13,269 Science Fiction audiobooks in our catalog.
More narrated by Barrett Whitener
Barrett Whitener narrates 69 unabridged audiobooks in our catalog, 631 hours in all.
About as long, on the Science Fiction shelf
1,724 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
Callahan’s Key is book 2000 of Spider Robinson's Callahan series: a 12.7-hour unabridged recording, read by Barrett Whitener, released June 24, 2005, on the Science Fiction shelf.
The listen at a glance
- Length
- 12.7 hrs
- Narrated by
- Barrett Whitener
- Released
- June 24, 2005
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Science Fiction
- Series
- The Callahan Series #2000
- ISBN
- 9781624607790
How to listen to Callahan’s Key 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 the Callahan’s Key audiobook?
Callahan’s Key runs 12.7 hours unabridged. At 1.5× speed that drops to roughly 8.5 hours.
Is the Callahan’s Key audiobook free?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates Callahan’s Key?
Callahan’s Key is narrated by Barrett Whitener.
Is Callahan’s Key worth listening to at 1.5× speed?
At 1.5× you'd finish in about 8.5 hours, saving 4.2 hours.