Pace Runs or Races: Pace races mean running the whole distance of a race at a constant speed. In pace races, an athlete runs the race with uniform speed. Generally, 800m and above races are included in pace races. As a matter of fact, an athlete can run a distance of 300m at fuII speed. So, in longer races such as 800 m or above races he/ she must conserve his energy by reducing his speed.