Arm Race Gora Kamiensk Ultra Mamut Pk 2026

Ultra Mamut is the long obstacle-race branch of ARM Race, held at Góra Kamieńsk, a hill and recreation area in the Łódź Voivodeship. ARM Race caters to a wide range of participants, including families with children, beginners, regular amateurs, and serious OCR competitors. Its standard Kamień format includes PRO and OPEN races over 5 km and 10 km, a FUN 5K, and the Pomarańczowy Wojownik option. Ultra Mamut extends the obstacle format to a much longer test over 44 km. The race concept is straightforward but challenging: participants cover off-road distance and navigate obstacles instead of focusing solely on road time. Góra Kamieńsk also hosts trail running and MTB events, indicating the venue is suited for climbing, rough terrain, and outdoor sports rather than urban races. The Ultra Mamut Open field is small compared to mass races; one recorded edition had 24 starters, with the winner finishing in 5:38:24. ARM Race also organizes winter obstacle ultra events, aligning with the Mamut concept: a tougher, colder, more endurance-focused version of OCR for those seeking more than the typical 5K or 10K obstacle course.