Born and raised in Flagstaff, Terrain Mud Runs is excited to bring our first event to Flagstaff this summer! Get ready for obstacles and mud with a race you'll be proud to conquer that starts and finishes at the Flagstaff Extreme Challenge course.

Terrain challenges you both physically and mentally with over 20 obstacles! Choose YOUR course of 5k, 10k or 10k. Party at the finish line with friends, family, mud and views of the obstacles you conquered. You’ll be proud when you finish your race with us. Make terrain YOUR race.

The cool pine forests surrounding Flagstaff make the perfect spot for a mud run. Race in Arizona in July where temperatures are still in the 70s!

You’ll sweat. You’ll get dirty. You and your friends will have the time of your life.