Endorfina Bieg Pod Prąd hosts an obstacle course race at the recreational grounds near Zalew Zemborzycki in Lublin, with the race office, start, and finish located in the same lakeside area. The event focuses on short OCR distances instead of road running: Kids is 1 km with 10 obstacles, Impuls is 4 km with 15 obstacles, and Wojownik is 8 km with 30 obstacles.
Runners begin in waves, with 30 children per Kids wave and 50 adults per wave for the Impuls and Wojownik courses. The organizers aim to bring the raw OCR atmosphere of the Bug River borderlands to Lublin; the event has been running for ten years. This format is suitable for families, novice obstacle runners, and those seeking a compact yet obstacle-intensive race day.