The aim of a challenge event is to drive your vehicles to various points within the competition site. At each point there will be a punch which will be identified by a number. The punch will be attached to a fixed point by a cable. The punch card (attached by the scrutineer to your vehicle) must be clearly marked with the punch in the correct numbered box.

In addition there may also be special tasks or sections which are worth extra points. These may take the form of driving, mental or physical tasks. Each task will be overseen by a marshall who will issue you with instructions and record your score.

The winner will be the vehicle which has attained the highest points score at the end of the competition.