Brazilian Gold Mine Mystery: Biff Brewster Adventure: Audiobook
Book 1 of the Biff Brewster Mystery Adventures series
According to The Books Insider's catalog data, the Brazilian Gold Mine Mystery: Biff Brewster Adventure audiobook runs 4.5 hours unabridged, narrated by John Rayburn (about 3 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 4.5 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 9 days |
| 1 hour / day | 5 days |
| 2 hours / day | 3 days |
| 1 hour / day at 1.5× | 3 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 4.5 hours, it is shorter than 89% of the 812 Action & Adventure (Teen & YA) audiobooks in our catalog.
Catching up on The Biff Brewster Mystery Adventures
This is book 1. Books 1 to 3 run 12.6 hours in all.
| Book | Title | Length |
|---|---|---|
| 1 | Brazilian Gold Mine Mystery: Biff Brewster Adventure | 4.5 hrs |
| 2 | Mystery of the Chinese Ring: Biff Brewster Adventure | 4.3 hrs |
| 3 | Hawaiian Sea Hunt Mystery: Biff Brewster Adventure | 3.8 hrs |
More narrated by John Rayburn
John Rayburn narrates 87 unabridged audiobooks in our catalog, 599 hours in all.
About as long, on the Action & Adventure (Teen & YA) shelf
29 Action & Adventure (Teen & YA) 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
Brazilian Gold Mine Mystery: Biff Brewster Adventure is book 1 of Andy Adams's Biff Brewster Mystery Adventures series: a 4.5-hour unabridged recording, read by John Rayburn, released May 16, 2023, on the Action & Adventure (Teen & YA) shelf.
The listen at a glance
- Length
- 4.5 hrs
- Narrated by
- John Rayburn
- Released
- May 16, 2023
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Action & Adventure (Teen & YA)
- Series
- The Biff Brewster Mystery Adventures #1
- ISBN
- 9798212661003
How to listen to Brazilian Gold Mine Mystery: Biff Brewster Adventure 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 Brazilian Gold Mine Mystery: Biff Brewster Adventure audiobook?
Brazilian Gold Mine Mystery: Biff Brewster Adventure runs 4.5 hours unabridged. At 1.5× speed that drops to roughly 3 hours.
Is the Brazilian Gold Mine Mystery: Biff Brewster Adventure audiobook free?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates Brazilian Gold Mine Mystery: Biff Brewster Adventure?
Brazilian Gold Mine Mystery: Biff Brewster Adventure is narrated by John Rayburn.