Trials (also knowns as "footup trials"), is a motorcycle riding discipline where riders attempt to ride a short, technically challenging course without putting their feet on the ground.
Competitions involve riding several short, marked "sections" and tallying the number of times each rider puts their foot down ("dabs"). The sections are marked such that beginners have easier obstacles that require less skill and commitment, while experts need to ride more advanced lines.
The motorbike used for trials is very light and manoevreable. It has no seat as the rider stands on the footpegs, and the engine is designed to deliver smooth power at low speeds. Unlike other offroad riding disciplines, there is seldom any spinning of wheels, and as a result of the extremely low tyre pressures used (0.3 bar or 5 psi) the environmental impact of a trials bike is very low.