The Catalyst: Audiobook
Book 1 of the Catalyst series
According to The Books Insider's catalog data, The Catalyst runs 12.2 hours as an unabridged audiobook, narrated by Elizabeth Knowelden (about 8.2 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 12.2 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 25 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 12.2 hours, it runs longer than 77% of the 5,647 Sci-Fi, Fantasy & Paranormal audiobooks in our catalog.
Catching up on Catalyst
This is book 1. Books 1 to 6 run 84 hours in all.
| Book | Title | Length |
|---|---|---|
| 1 | The Catalyst | 12.2 hrs |
| 2 | Fulcrum of Light | 13 hrs |
| 3 | Ghosts of the Erlyn | 11.3 hrs |
| 4 | The Defiance of Vim | 14.5 hrs |
| 5 | The Weight of Darkness | 17 hrs |
| 6 | Will of the Phrenic | 16 hrs |
More narrated by Elizabeth Knowelden
Elizabeth Knowelden narrates 212 unabridged audiobooks in our catalog, 2,094 hours in all.
About as long, on the Sci-Fi, Fantasy & Paranormal shelf
1,107 Sci-Fi, Fantasy & Paranormal 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 Catalyst is book 1 of Helena Coggan's Catalyst series: a 12.2-hour unabridged recording, read by Elizabeth Knowelden, released October 11, 2016, on the Sci-Fi, Fantasy & Paranormal and Action & Adventure (Teen & YA) shelves.
The listen at a glance
- Length
- 12.2 hrs
- Narrated by
- Elizabeth Knowelden
- Released
- October 11, 2016
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Sci-Fi, Fantasy & Paranormal, Action & Adventure (Teen & YA), Tough Topics
- Series
- Catalyst #1
- ISBN
- 9781531864002
How to listen to The Catalyst 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 Catalyst as an audiobook?
The Catalyst runs 12.2 hours unabridged. At 1.5× speed that drops to roughly 8.2 hours.
Is The Catalyst free as an audiobook?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates The Catalyst?
The Catalyst is narrated by Elizabeth Knowelden.
Is The Catalyst worth listening to at 1.5× speed?
At 1.5× you'd finish in about 8.2 hours, saving 4.1 hours.