Obstacle Course Racing (OCR) is a sport where athletes run and / or overcome obstacles in timed events. There are dozens of event formats across several disciplines.

Individuals and teams compete from 50 meters up to ultra distance in outdoor, wilderness, stadium, urban, beach and indoor venues.

OCR 100m at the 2019 South East Asia Games



Ninja races are events where  individuals and teams compete on Ninja Warrior style obstacles. Competitions are held on courses between 50 and 200m long with 6 to 16 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 OCR is the Ultimate Ninja Athlete Association.

Obstacle Course Racing


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 OCRs worldwide and  brands such as  True Grit, Toughest, Spartan Race, Tough Mudder and Strong Viking have multiple races, series and championships.



Track OCRs are sprint to middle distance competitions from 50 meters and up. Individual and mixed relay events have 2 to 24 people or more on the start line. The 100 m (10 OCR obstacles) and 400 m (12 OCR obstacles) events have established world records and have been held in Games recognised by the International Olympic Committee.

Track OCR is held on athletic tracks, stadiums, streets or other flat areas.  Events in popular culture include the Million Dollar Mile competition show on CBS television network in the United States.



Combine OCRs are typically run on 1,000 to 3,000 meter courses and include obstacles that test upper body, lower body, grip and total strength, including functional exercises. Mass starts can have 100  people or more at a time.

Popular races include Tough Mudder X (TMx), Hyrox, Spartan Crossfit Challnege and the Civilian Military Combine. These events are designed to be spectator friendly, with exciting, head to head racing.



Beach OCRs are mass participation events that take advantage of the sand, sunshine and water of beach environments. Formats include individual, mixed team and relay races.

Beach OCR evens are held on all continents and many countries with beach access, from England to Indonesia and the middle east.

Set Time OCRs


Set Time OCRs are 4, 8 , 12 or 24 hours mass participation events with men, women and team competitions. Competitors complete as many 5 km to 5 mile laps as they can in the time allowed. 

World's Toughest Mudder is the best known set time OCR, with individuals and teams covering as much distance as possible in 24 hours. Spartan Ultra World Championships is a 24 hour loop course held in Iceland



Also known as Adventure Racing, 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 1980s and 1990s introducing man made obstacles, fewer disciplines, less equipment and shorter distances.

Originally popularized by the Raid Gauloises and Eco-Challenge.