(just read) Top Snowboarding Competitions
From the Olympics to the X-Games, There's An Event For All Types of Riders

"In 1982, the first snowboard race was held in Suicide Six, just outside of Woodstock, Vermont. The goal for this initial competition that called for participants to board down a steep, icy face was rather simple- stay alive! The good thing is that racing competitions have gradually evolved since that first rather dangerous get- together, just as snowboards and equipment have since Milovich's initial concept.

Still, it wasn't until the inclusion of snowboarding events in the 1998 Olympic Games in Nagano, Japan, that snowboarding became a sport in the eyes of the masses. Since then, its popularity has been on a steady incline. "

http://www.extremeprosports.com/snowboarding/top_snowboarding_competitions.html