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boardercross

n. (context snowboarding English) snowboard cross

Wikipedia
Boardercross

Boardercross is a snowboard competition in which a four to six snowboarders race down a course. Boardercross courses are typically quite narrow and include cambered turns, various types of jumps, berms, rollers, drops, steep and flat sections designed to challenge the riders' ability to stay in control while maintaining maximum speed. It is not uncommon for racers to collide with each other mid-race.

Boardercross courses share common traits with motorcycle motocross courses, hence the similarity between the names of each sport.

Competition format is typically a time trial followed by a knock-out tournament.