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 Mud Run Obstacle Course Guide to Your Career
Woman obstacle race mud hi-res stock photography and images - Alamy
OCR 101: Do I Need a Team to Run an Obstacle Race or Mud Run?
Obstacle Course Races - The Best Events for Runners to Try
22 Epic Obstacle Course Races You NEED to Try This Spring
The 12 of the Most Epic Mud Runs in the World
7 Best Mud Runs in 2018 - Top Mud Races & Obstacle Runs Around the World
The Great S'more Mud Run
The 12 of the Most Epic Mud Runs in the World
Welcome to Mud Run Finder - Mud Run Finder
Conquering River, Jungle and the World's Toughest Bike Race - The New York Times