EXTREME AMPHIBIRUN is an endurance event series in which participants attempt 10 kilometre long obstacle courses that test mental and physical strength. The event prides itself on its unique approach of blending an obstacle course with iconic seaside locations. This unique spin on the mud based running challenges is creating big waves in the obstacle course racing world.
The OCR World Championships are the only independent global championships for the sport of Obstacle Course Racing. Its mission is to unify, promote, and increase participation in the sport of OCR while celebrating its athletes and community. All Elite entries will benefit from
Score points at AMPHIBIRUN Worthing and AMPHIBIRUN Clacton-on-Sea now part of the the official Mudstacle UK OCR League.
Register to take part in the league
There are two ways to register for the UK OCR League: Either become a Mudstacle Member: For £33 per year you'll get OCR