Organisations These are the biggest European OCR Event Organisations. Do you miss an organisation? Let us know via info@ocreurope.com. AdventureyBarbarian RaceFISO World ObstacleInferno RunLegion RunMud MastersMuddy Angel RunNuclear RacesOCR SeriesRunmageddonSpartan RaceStrong VikingTough MudderToughestWar RaceXletix Share this:TwitterFacebook