Natural Obstacle Off Trail Race
This is a combination obstacle course and trail race, but the obstacles are a part of nature. Steep uphills, crazy downhills, canyons, swamps, logs, boulders, cliffs. You may even run into a bear - you never know!
The NOOTR course is set by the course marshall each year, in his words, here's how he does it...
I go into the woods and look around. When I see something (a steep hill, thick brush, a swamp, a cliff, etc) that, if hiking in the woods, I would go around....Well, that obstacle then becomes part of the course.
... and there you have it