What company are you calling from? 10 mg accutane every other day Obstacle races and mud runs tend to get lumped into the same category. The former has loads of obstacles and happens to take place on a muddy, rugged race course. The latter is closer to a trail run or cross country race with a lot more mud, which you’ll need to jump in or crawl through. (To keep things simple, from here on out, I’ll refer to both as an obstacle race.)