Get the Men's Fitness newsletter!
Get off the treadmill and try one of these alternatives.
Pete Jacobs walks you through this grueling race.
Patrick Lange and Daniela Ryf reigned supreme.
The Giants star on using swimming, boxing, and MMA training to stay fit.
Kevin Masters decided to transform himself into a new man.
The most decorated Olympian of all time jokingly challenged the "Notorious".
What you need to know when you ditch the pool.
Everything you need to know to run, swim, and bike to victory.