Underground: Audiobook
Book 3 of the Greywalker series
According to The Books Insider's catalog data, the Underground audiobook runs 11.2 hours unabridged, narrated by Mia Barron (about 7.5 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 11.2 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 23 days |
| 1 hour / day | 12 days |
| 2 hours / day | 6 days |
| 1 hour / day at 1.5× | 8 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 11.2 hours, it runs longer than 69% of the 12,109 Fantasy audiobooks in our catalog.
Catching up on Greywalker
This is book 3. Books 1 to 2 run 23.4 hours before it; books 1 to 9 run 110.8 hours in all.
| Book | Title | Length |
|---|---|---|
| 1 | Greywalker | 12.1 hrs |
| 2 | Poltergeist | 11.3 hrs |
| 3 | Underground | 11.2 hrs |
| 4 | Vanished | 11.9 hrs |
| 5 | Labyrinth | 13.2 hrs |
| 6 | Downpour | 12.6 hrs |
| 7 | Seawitch | 12.5 hrs |
| 8 | Possession | 11.5 hrs |
| 9 | Revenant | 14.5 hrs |
More narrated by Mia Barron
Mia Barron narrates 193 unabridged audiobooks in our catalog, 1,944 hours in all.
About as long, on the Fantasy shelf
1,910 Fantasy 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
Underground is book 3 of Kat Richardson's Greywalker series: a 11.2-hour unabridged recording, read by Mia Barron, released August 14, 2009, on the Fantasy shelf.
The listen at a glance
- Length
- 11.2 hrs
- Narrated by
- Mia Barron
- Released
- August 14, 2009
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Fantasy
- Series
- Greywalker #3
- ISBN
- 9781440718908
How to listen to Underground 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 Underground audiobook?
Underground runs 11.2 hours unabridged. At 1.5× speed that drops to roughly 7.5 hours.
Is the Underground audiobook free?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates Underground?
Underground is narrated by Mia Barron.
Is Underground worth listening to at 1.5× speed?
At 1.5× you'd finish in about 7.5 hours, saving 3.7 hours.