In Slalom, single gates are spaced close together necessitating quicker and shorter turns. The gates are set alternating between red and blue and are arranged in a variety of configurations to challenge the competitor. In this discipline because the distances between the gates are relatively small, ski racers take a fairly direct line and often knock the poles out of the way as they pass, which is known as blocking. A course has 55 to 75 gates for men and 40 to 60 for women. A Slalom race is generally composed of two runs, held on different courses on the same ski run.