Mountain bike trials, also known as observed trials, is a discipline of mountain biking

Mountain biking

Mountain biking is a sport which consists of riding bicycles off-road, often over rough terrain, using specially adapted mountain bikes. Mountain bikes share similarities with other bikes, but incorporate features designed to enhance durability and performance in rough terrain.Mountain biking can...

 in which the rider attempts to pass through an obstacle course without setting foot to ground. Derived from motorcycle trials

Motorcycle trials

Motorcycle trials, also termed observed trials, is a non-speed event on specialized motorcycles. The sport is most popular in the United Kingdom and Spain, though there are participants around the globe....

, it originated in Catalonia, Spain and is said to have been invented by the father of Ot Pi

Ot Pi

Ot Pi is a Spanish bike-trials rider, often regarded as the man responsible for the discipline's origin. He has won several world titles and is featured on a number of videos that showcase the sport....

, a world champion motorcycle trials rider. Pi's father had wanted his son to learn motorcycle trials by practicing on an ordinary bicycle.

Trials riding is an extreme test of bicycle

Bicycle

A bicycle, also known as a bike, pushbike or cycle, is a human-powered, pedal-driven, single-track vehicle, having two wheels attached to a frame, one behind the other. A person who rides a bicycle is called a cyclist, or bicyclist....

 handling skills, over all kinds of obstacles, both natural and man-made.