Time penalties are awarded for being too slow over the optimum time at a rate of 0.4 penalty points per second over this time up to the time limit (twice the optimum time) at which point the competitor is eliminated. Some national bodies implement a fastest time allowed for lower grades where more inexperienced riders compete. The fastest time allowed can range from 20 seconds to 45 seconds faster than the optimum time. Typically, penalty points are awarded at a rate of 1 per second faster than this time.