Organizace Extreme Fighting Championships pořádala první akci 1. 5. 2004 pod názvem 'EFC 2 - Extreme Fighting Championships 2' (Ardmore, Oklahoma, United States).
Do dnešního dne uspořádala 3 akce (USA).
Extreme Fighting Championships
| Datum | Země | Název, adresa |
|---|---|---|
| 24.8.2013 |  | Extreme Fighting Championships - Warrior Trump Taj Mahal Hotel and Casino, Atlantic City, New Jersey, United States |
| 23.4.2011 | | EFC - Extreme Fighting Championships 2 Crowne Plaza Hotel, Fairfield, New Jersey, United States |
| 1.5.2004 | | EFC 2 - Extreme Fighting Championships 2 Ardmore, Oklahoma, United States |