Dating back to 1997, this year's event at Buttermilk Ski Arena is set to include snowboarding, skiing and snowmobile disciplines.

Big names to look out for include Australian Scotty James in the snowboarding superpipe.

The dominant force for many years, James is the reigning champion and hot favourite for a third Aspen gold medal.

Slopestyle looks to be more competitive, with Canadian star Mark McMorris and compatriot Max Parrot likely to battle it out for top spot with Norway's Marcus Kleveland.

All hometown eyes will be on halfpipe skiing, with Aspen local Alex Ferreira back to defend his superpipe crown.

Big air should be the domain of Norway's Birk Ruud, who only last weekend won the Seiser Alm FIS Freeski Slopestyle World Cup.

American Alex Hall is also a big name in slopestyle, having won gold in Aspen last winter.

Special Olympics unified snowboarding will also return for its sixth year at X Games Aspen and unified skiing will make its debut.

Teams will be comprised of one professional action sports athlete, including X Games and Olympic medallists, and one Special Olympics action sports athlete for a total of 10, two-person teams in snowboarding and six, two-person teams in skiing.

Each of the team members will take one run on each of the two competition courses, with the professional athletes racing against one another and the Special Olympics athletes racing one another - the combined best times of each team will determine the results.

As well as qualifying tomorrow, there are two finals - the Monster Energy men's snowboard superpipe and Pacifico women's snowboard big air.

Competition is scheduled to conclude on Sunday (January 26).