Cross country running and track running are both forms of long-distance running, but they have some key differences. Cross country running involves running over natural surfaces such as grass, dirt, mud, hills, and sometimes obstacles. Track running involves running on a flat, oval-shaped track made of synthetic material. Cross country races vary in distance, but typically range from 3 to 6 kilometers (1.9 to 3.7 miles) for high school runners. Track races are standardized in distance, such as 800 meters, 1500 meters, or 5000 meters. Cross country races are scored by team, with the top five finishers from each team earning points based on their place. Track races are scored by individual, with the top three finishers from each event earning points for their team.