Cross country running is a sport in which teams and individuals run a race on open-air courses over natural terrain such as dirt or grass. The course, typically 3–6 kilometres long, may include surfaces of grass, and earth, pass through woodlands and open country, and include hills, flat ground and sometimes gravel road.
It is both an individual and a team sport; runners are judged on individual times and teams by a points-scoring method. Training sessions are held after school and before school to accommodate all students. Island School competes in the HKSSF, ESF and ISSFHK Competitions throughout Term 1 and 2.