Secret Journey to Planet Serpo: A True Story of Interplanetary Travel: Audiobook
According to The Books Insider's catalog data, the Secret Journey to Planet Serpo: A True Story of Interplanetary Travel audiobook runs 9.6 hours unabridged, narrated by Robin Douglas (about 6.4 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 9.6 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 20 days |
| 1 hour / day | 10 days |
| 2 hours / day | 5 days |
| 1 hour / day at 1.5× | 7 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 9.6 hours, it runs longer than 82% of the 10,901 Medicine & Naturopathy audiobooks in our catalog.
More narrated by Robin Douglas
Robin Douglas narrates 27 unabridged audiobooks in our catalog, 212 hours in all.
- ADHD: A Hunter in a Farmer's World
- Sex and the Enneagram: A Guide to Passionate Relationships for the 9 Personality Types
- 7 Reasons to Believe in the Afterlife: A Doctor Reviews the Case for Consciousness after Death
- Cleansing Rites of Curanderismo: Limpias Espirituales of Ancient Mesoamerican Shamans
- The Transformational Power of Fasting: The Way to Spiritual, Physical, and Emotional Rejuvenation
About as long, on the Medicine & Naturopathy shelf
1,150 Medicine & Naturopathy 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
Secret Journey to Planet Serpo: A True Story of Interplanetary Travel is an audiobook by Len Kasten: a 9.6-hour unabridged recording, read by Robin Douglas, released October 29, 2019, on the Medicine & Naturopathy shelf.
The listen at a glance
- Length
- 9.6 hrs
- Narrated by
- Robin Douglas
- Released
- October 29, 2019
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Medicine & Naturopathy
- ISBN
- 9781644111147
How to listen to Secret Journey to Planet Serpo: A True Story of Interplanetary Travel 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 Secret Journey to Planet Serpo: A True Story of Interplanetary Travel audiobook?
Secret Journey to Planet Serpo: A True Story of Interplanetary Travel runs 9.6 hours unabridged. At 1.5× speed that drops to roughly 6.4 hours.
Is the Secret Journey to Planet Serpo: A True Story of Interplanetary Travel audiobook free?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates Secret Journey to Planet Serpo: A True Story of Interplanetary Travel?
Secret Journey to Planet Serpo: A True Story of Interplanetary Travel is narrated by Robin Douglas.