• Created by Adventurey, LLC, in 2014 the OCR World Championships is the first and only independent championship event in OCR, and requires athletes to qualify for a limited number of spots through a network of qualifying events.
• Officially known as the FISO OCR World Championships, and previously as the OCR World Series.
• Events include: 3 km (Sprint); 15 km (Standard); and 24-hour Enduro.
• Usually held in August each year.

• Ages 17-28, full-time university/college students.
• Short Course Championships 400 to 800 metres, 12-14 obstacles.
• Usually held in November each year (first held in the Philippines in November 2018).

• Ages 13 to 28 (six Age divisions).
• Short Course Championships 400 to 800 metres, 12-14 obstacles.
• Usually held in November each year (first held in the Philippines in November 2018).

• Primal Quest Pursuit is official Expedition OCR World Championship.
• Mixed and single gender teams of 2, 3 and 4.
• Distance covered is approximately 300 km, although there is usually a short course option.
• Winning time is anticipated at 4-5 days, with up to 10 days to finish.
• Usually held in September each year.

• Usually held in April each year.
  
• First held in 2018.
  

• Usually held in April each year.
• First scheduled for April 2019.

• Usually held in [Month] each year.

• Usually held in September each year.
• First held in 2011.
• The top athletes from the 5 Spartan Regional and 15 National Championships compete to be crowned the Spartan World Champion.

• Usually held in November each year.
• First held in 2018.
• The event is exclusively for Trifecta finishers.

• Usually held in December each year.
• First held in 2017.
• The event is those who have completed a regular-season Ultra within the time limits.

• Usually held in December each year.
• First held in 2017.
• The event is those who have completed a regular-season Ultra within the time limits.

• Usually held in November each year.
• First held in 2011.
• It is a 24-hour, lap based course complete with the obligatory obstacles.

• Usually held in September each year.
• There are 4 Regional Championships: East, West, Central Championships (USA); and the European Championships (UK).

• Usually held in February/March each year.
• ATS Sports International, working in partnership with Universal Brand Development, announced the cancellation of the ANW Experience Series on 07 February 2018; tickets went on sale in June 2017.

(Defunct)