Events where individuals and teams compete on Ninja Warrior style obstacles. Competitions are held on courses between 25 m and 200 m long with 4 or more Ninja Warrior obstacles, as head-to-head races or timed competitions. Events have been popularized by the american ninja warrior, ultimate beastmaster and Sasuke television show competitions in 148 countries. A billion people worldwide follow these shows. The official international League of Ninja is the ultimate ninja association.

Obstacle Course Races are large scale, mass participation events held in parks, ski resorts, wilderness, rural, urban and suburban locations. Races can have up to 30,000 participants and vary in length from 3 km (short course), 5 km (international), 12-15 km (standard), 21 km (long course) to 50 km (ultra).
There are over 2,500 OCR’s worldwide and brands such as True grit, toughest, spartan race, tough mudder and strong viking have multiple races, series and championships.

Events include sprints of a few hours through Expedition. Natural terrain obstacles such as mountains, deserts, rivers and oceans are common. Teams of 2, 3 or 4 use any means of non-motorized transport to navigate distances up to 1,000 km. Sprint Adventure Races were popularized in the 1980’s and 1990’s introducing man-made obstacles, fewer disciplines, less equipment and shorter distances. Originally popularized by the Raid Gauloises and Eco challenge.