Some links below may be affiliate links. Runworks may get paid if you buy something or take an action after clicking one of these.

As an Amazon Associate Runworks earns from qualifying purchases.

Ultramarathon Man Dean Karnazes is Insane
 Ultramarathon Man

The Perfect Mile Roger Bannister's 4 Minute Mile
 The Perfect Mile

Suunto Ambit 2 Best in Class Trail/Ultra/Trekking/Triathlon Watch
 Suunto Ambit 2