The School for Invisible Boys: Audiobook
Book 36 of the Kairos Files series
According to The Books Insider's catalog data, The School for Invisible Boys runs 6.9 hours as an unabridged audiobook, narrated by Mark Sanderlin (about 4.6 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 6.9 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 14 days |
| 1 hour / day | 7 days |
| 2 hours / day | 4 days |
| 1 hour / day at 1.5× | 5 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 6.9 hours, it runs longer than 88% of the 14,091 Non-fiction (Kids) audiobooks in our catalog.
More narrated by Mark Sanderlin
Mark Sanderlin narrates 253 unabridged audiobooks in our catalog, 1,468 hours in all.
About as long, on the Non-fiction (Kids) shelf
1,111 Non-fiction (Kids) audiobooks in our catalog run within 10% of this length. The most popular on the store:
- Refugee
- The Lost Heir (Wings of Fire #2)
- The Hidden Kingdom (Wings of Fire #3)
- The City of Ember: The First Book of Ember
- Out of My Mind
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 School for Invisible Boys is book 36 of Shaun David Hutchinson's Kairos Files series: a 6.9-hour unabridged recording, read by Mark Sanderlin, released February 6, 2024, on the Non-fiction (Kids) and Mystery & Fantasy shelves.
The listen at a glance
- Length
- 6.9 hrs
- Narrated by
- Mark Sanderlin
- Released
- February 6, 2024
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Non-fiction (Kids), Mystery & Fantasy
- Series
- The Kairos Files #36
- ISBN
- 9780593795200
How to listen to The School for Invisible Boys 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 School for Invisible Boys as an audiobook?
The School for Invisible Boys runs 6.9 hours unabridged. At 1.5× speed that drops to roughly 4.6 hours.
Is The School for Invisible Boys free as an audiobook?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates The School for Invisible Boys?
The School for Invisible Boys is narrated by Mark Sanderlin.