OCR Events

OCR 100

OCR 100 is a head to head competition up to 100 m long and includes individual and mixed relay formats. Races are typically held on courses with between 2 and 8 lanes and 5 to 10 obstacles. 


Events have been popularized by the American Ninja Warrior, Ultimate Beastmaster and Sasuke television show competitions in 148 countries. More than a billion people worldwide follow these shows.

Track OCR

Track OCRs are mass start competitions from 200 to 1,600 meters. Individual and mixed relay events have 16 to 20 people on the start line.


Track OCR is held on athletic tracks or stadiums with one or more laps and 10 to 15 obstacles. The Military Pentathlon Obstacle Run is a 500 m course with 20 standardized obstacle and has held world championships since 1950 under Conseil International du Sport Militaire

Combine OCR

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 fitness exercises. Starts have up to 24 people.


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

Beach OCR

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.


Notable races include the Shardana World Team Challenge and Palawan Beach OCR Championships. OCR Americas is holding Beach OCR Pan American championships preceding the World Beach Games.

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 to 40 km.


There are over 2,500 OCRs worldwide and international brands such as Spartan Race, Tough Mudder and Strong Viking have multiple races, series and championships.

Set Time and Ultra OCR

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. Ultra OCRs are 42 km (26.2 mile) or longer on single or multiple lap courses.


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.

Expedition OCR

Also known as Adventure Racing, Expedition OCR includes large natural terrain obstacles such as mountains, rivers and oceans. Teams of 2, 3 or 4 use any means of non-motorized transport to navigate distances from 100 km to 1,000 km.


Originally popularized by the Raid Gauloises and Eco-Challenge, Primal Quest is the official Expedition OCR World Championships.