The fitnessgram pacer test is a multistage aerobic capacity test that progressively gets harder as it continues. The 20 meter pacer test will begin in 30 seconds. Line up at the start. The running speed starts slowly, but gets faster everytime you hear this signal. (Do ooh woop) A single lap should be completed everytime you hear this sound. (Ding) Remember to run in a straight line, and as long as possible.