A mud run is like a 5K or a 10K with extreme obstacles that get the participant very dirty. A sun run is a 5K or 10K through the desert. We're doing both. Check out some popular examples from other parts of the country:

The Down & Dirty National Mud & Obstacle Series

The Original Mud Run

Survivor Mud Run

World Famous Mud Run

Morongo Basin Search & Rescue Desert Run

The 4 Deserts Run

Desert Run

Aravaipa Running