It seems that the question is not telling enough to have only one acceptable answer. Please specify more details so that there would be only one true answer.
My answer is
The race is not about the time taken (therefore how fast one is) but some other aspect. As an example this is humans running from start to finish line. The winner is declared how funny he is while running. The one who declares himself to be the winner is dressed as clown and he clearly sees how much everyone is laughing while he performs the act of running.
Another possibility which would make one a clear winner is that the race is about how short distance each competitor travels. One is clever enough to find a shortcut while another travels much faster but travels much longer distance.
Also this could be a race where they drive vehicles. The competition is again not about who arrives to finish line first but who has takes least damage at the end. The winner did not hit any obstacles on the track they were driving and the opponent hit a lot of obstacles having the vehicle in visibly poor condition upon arriving to the finish line.