Austria's Anna Gasser is one of a number of Olympic champions competing in the Winter X Games in Aspen ©Getty Images

A number of Pyeongchang 2018 Winter Olympic champions are preparing to compete at the 23rd edition of the Winter X Games, which begins tomorrow in the American ski resort of Aspen.

The X Games is an annual extreme sports event, created and broadcast by television channel ESPN

Aspen, in Colorado, is set to host its 18th consecutive Winter X Games.

Included in this year's line-up are halfpipe Olympic champions David Wise and Chloe Kim, both of the United States, and big air Olympic champion Anna Gasser of Austria.

Joining them will be American snowboarding legend, slopestyle Olympic champion and six-time Winter X Games medalist, Jamie Anderson.

The competition kicks off tomorrow at Buttermilk Mountain, with more than 150 athletes expected to compete in 20 different disciplines including snowboard, skiing, snowmobile and moto events. 

Tomorrow's first event will be the Special Olympics unified snowboarding competition, which sees ten two-person teams consisting of an X Games athlete and a Special Olympian take on one run of both competition courses. 

The American ski resort of Aspen will host its 18th consecutive Winter X Games ©X Games
The American ski resort of Aspen will host its 18th consecutive Winter X Games ©X Games

Australian Olympian Scotty James and three-times X Games gold medallist Silje Norendal of Norway are among those competing in that event. 

The Games will last for four days until the culminating events on January 27, the men's snowboard superpipe final and the snow bike best trick final.

This year's competition will feature a new event, the snowboard knuckle huck, scheduled for January 26.

Competitors include Olympic slopestyle gold medalist Red Gerard of the United States, his compatriot and 2014 slopestyle Olympic champion Sage Kotsenburg and seven-time X Games gold medalist Mark McMorris of Canada.

The winner will receive an exclusive knuckle ring and chain.

All the action will be available live and on demand on ESPN Player

The sporting action will take place alongside a music festival featuring acts such as Lil Wayne and Kygo.