The distance, depending on the circumstances-- middle school, high school, college, or professional race-- is anywhere between 3 kilometers and 12 kilometers. The courses may consist of varying terrain, from flat and on pavement and grass, to extremely hilly and on trails. | The distance, depending on the circumstances-- middle school, high school, college, or professional race-- is anywhere between 3 kilometers and 12 kilometers. The courses may consist of varying terrain, from flat and on pavement and grass, to extremely hilly and on trails. |