Obstacle Course racing(OCR) is a
sport in which a competitor, traveling on foot, must overcome various physical challenges that are in the form of obstacles. Mud and trail runs are combined and the races are designed to result in mental and physical collapse. Obstacles include, but are not limited to, climbing over walls, carrying heavy objects, traversing bodies of water, crawling under
barbed wire, and jumping through fire. Many obstacles are similar to those used in
military training, while others are unique to obstacle racing and are employed throughout the course to test
endurance, strength, speed and,
dexterity. Races vary in both distance and challenge level, combining
trail running,
road running, and cross country running. With race venues typically in large cities, organizers encourage athletes of all types to participate. All Obstacles were introduced into Cross Country Running at Tough Guy, recorded on video 1989 - 2007. Most signature obstacles were actually created by Mr Mouse. According to the
Los Angeles Times in 2012, the number of events—typically all-day festivals—rose rapidly. In accordance with the sub-culture's fast rate of growth, the
Obstacle Race Magazine was launched.