I was balls deep in a thirteen year old the other day when it hit me, The FitnessGram Pacer Test is a multistage aerobic capacity test that progressively gets more difficult as it continues. The 20 meter Pacer Test begin in 30 seconds. Line up at the start. The running speed starts slowly, but gets faster each minute after you hear a signal. [beep] a single lap should be completed each time you hear his sound. [ding] remember to run in a straight line, and run as long as possible. The second time you fail complete a lap before the sound, your test is over. The test will begin on the word start. On your mark, get ready, start.