It's a fact that Tough Mudder have the best mud run obstacles on this blue and green (and orange) planet. Let us show you why.
The 12 of the Most Epic Mud Runs in the World
Playing Dirty
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In Cold Mud The New Yorker
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Adventure Racing: 10 Obstacles You'll Find At A
Top 5 Toughest Tough Mudder Obstacles
Obstacles in a Tough Mudder Mud Run, Tough Mudder USA
Q and A with Canada's toughest obstacle racer, Ryan Atkins - Canadian Running Magazine
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OCR 101: What Kind of Obstacles Will I find at an Obstacle Race or Mud Run?
Obstacles in a Tough Mudder Mud Run