Observed Trials- a low speed motorcycle competition where the object is to ride over natural and man made obstacles without putting your foot down. For world-class riders, the obstacles can get to be pretty sizeable, The sport is very popular in Europe, it is challenging to do, and is fun to watch. Trials riders are sometimes referred to as the gymnasts of motocycling or as Bruce Brown from the move "On Any Sunday" calls trails riders "the Magicians of the motorcycle world". The bikes are light and agile - the emphasis is on technique.