Mud Run Guide is always looking for the next great option for you and your obstacle racing needs. Recently we caught wind of the KOA series from Saucony, a brand not well known as an OCR go to shoe. We were intrigued by the KOA ST as it says "MUD" on the side of the shoe. Any shoe that has the word MUD on it intrigues both Brett and Margaret. How could it not?!?