Once Upon a Reef: Audiobook
Book 1 of the A Chris Zachariius Thriller series
According to The Books Insider's catalog data, the Once Upon a Reef audiobook runs 14.7 hours unabridged, narrated by Steve Knupp (about 9.8 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 14.7 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 30 days |
| 1 hour / day | 15 days |
| 2 hours / day | 8 days |
| 1 hour / day at 1.5× | 10 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 14.7 hours, it runs longer than 94% of the 13,042 Suspense audiobooks in our catalog.
More narrated by Steve Knupp
Steve Knupp narrates 114 unabridged audiobooks in our catalog, 390 hours in all.
- Dopamine Detox: The 10 Day Reset System: A Science Backed Step-by-Step Guide to Break Digital Addiction, Crush Cravings, Rewire Your Brain, and Reclaim Your Focus For Good
- The Battle of Ia Drang: The History and Legacy of the Vietnam War’s First Major Battle
- Tyrone Power: The Life and Legacy of One of Hollywood’s Most Famous Swashbucklers
- The Great Railroad Strike of 1877: The History and Legacy of the Protests across America over Wages and Labor Conditions
- Talleyrand: The Life and Legacy of France’s Most Influential Diplomat
About as long, on the Suspense shelf
844 Suspense 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
Once Upon a Reef is book 1 of Chap Harper's A Chris Zachariius Thriller series: a 14.7-hour unabridged recording, read by Steve Knupp, released July 27, 2025, on the Suspense shelf.
The listen at a glance
- Length
- 14.7 hrs
- Narrated by
- Steve Knupp
- Released
- July 27, 2025
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Suspense
- Series
- A Chris Zachariius Thriller #1
- ISBN
- 9798347399826
How to listen to Once Upon a Reef 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 Once Upon a Reef audiobook?
Once Upon a Reef runs 14.7 hours unabridged. At 1.5× speed that drops to roughly 9.8 hours.
Is the Once Upon a Reef audiobook free?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates Once Upon a Reef?
Once Upon a Reef is narrated by Steve Knupp.
Is Once Upon a Reef worth listening to at 1.5× speed?
At 1.5× you'd finish in about 9.8 hours, saving 4.9 hours.