Boundless: Upgrade Your Brain, Optimize Your Body & Defy Aging: Audiobook
According to The Books Insider's catalog data, the Boundless: Upgrade Your Brain, Optimize Your Body & Defy Aging audiobook runs 36.5 hours unabridged, narrated by James Newcomb (about 24.3 hours at 1.5× playback speed).
The instrument When will you finish it?
Based on 36.5 hours of listening.
| Your pace | You'll finish in |
|---|---|
| 30 min / day | 73 days |
| 1 hour / day | 37 days |
| 2 hours / day | 19 days |
| 1 hour / day at 1.5× | 25 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 36.5 hours, it runs longer than 100% of the 4,141 Fitness, Diet & Nutrition audiobooks in our catalog.
About as long, on the Fitness, Diet & Nutrition shelf
3 Fitness, Diet & Nutrition audiobooks in our catalog run within 10% of this length. The most popular on the store:
- The 21st Century Man: Advice from 50 Top Doctors and Men's Health Experts So You Can Feel Great, Look Good, and Have Better Sex
- Expand The Power of Your Mind: 10 Books in 1: Third Eye Awakening, Reiki Healing, Chakras for Beginners, Kundalini, Yoga Sutras of Patanjali, Akashic Records 1-2, Law of Attraction, Empath
- Advanced Yoga Practices - Easy Lessons for Ecstatic Living, Volume 2
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
Boundless: Upgrade Your Brain, Optimize Your Body & Defy Aging is an audiobook by Ben Greenfield: a 36.5-hour unabridged recording, read by James Newcomb, released February 1, 2020, on the Fitness, Diet & Nutrition shelf.
The listen at a glance
- Length
- 36.5 hrs
- Narrated by
- James Newcomb
- Released
- February 1, 2020
- Format
- Unabridged audiobook
- Language
- English
- Store shelves
- Fitness, Diet & Nutrition
- ISBN
- 9780999722794
How to listen to Boundless: Upgrade Your Brain, Optimize Your Body & Defy Aging 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 Boundless: Upgrade Your Brain, Optimize Your Body & Defy Aging audiobook?
Boundless: Upgrade Your Brain, Optimize Your Body & Defy Aging runs 36.5 hours unabridged. At 1.5× speed that drops to roughly 24.3 hours.
Is the Boundless: Upgrade Your Brain, Optimize Your Body & Defy Aging audiobook free?
Yes, for new listeners: the trial starts you with three free audiobooks.
Who narrates Boundless: Upgrade Your Brain, Optimize Your Body & Defy Aging?
Boundless: Upgrade Your Brain, Optimize Your Body & Defy Aging is narrated by James Newcomb.
Is Boundless: Upgrade Your Brain, Optimize Your Body & Defy Aging worth listening to at 1.5× speed?
At 1.5× you'd finish in about 24.3 hours, saving 12.2 hours.