The aim of trials riding is to jump over obstacles (either natural or artificial) with only the bikes’ tyres touching the ground. Think of it like those dog trials you sometimes see on television, except with humans on bikes! Points are deducted if any part of your body or the bike touch the ground. Some competitions allow the underside of the bike and pedals to touch the ground. During observed trials, each rider attempts the set course with . The duration of each event is usually around 180 seconds; points are also deducted for going over that time limit. The winner is the rider who has the least number of accumulated points at the end of the competition.
Bicycle trials riding originated in Spain in the 1980s. The modified class of trials riding uses a special-purpose single-speed bicycle, built with small 20″ wheels and extremely low gearing, no saddle, no seatpost, and little else. The frame itself is built with a long wheelbase while the wheels utilise a high number of spokes and fat tyres. Trust me, these guys make it look easy - it takes HOURS of practise to reach this level of skill and ability: