The second edition of the International Bobsleigh and Skeleton Federation (IBSF) Para-Sport World Championships will get underway tomorrow at the St Moritz-Celerina Olympic Bobrun.
However, World Championship action will be restricted to just the seated bobsleigh competition.
Para-skeleton athletes will compete, but with just four registered sliders their competition will not count as a World Championship.
Athletes from 11 nations will compete in the bobsleigh - Australia, Austria, Canada, Spain, Estonia, Britain, Latvia, Lithuania, Norway, Switzerland and the United States.
Canadian Lonnie Bissonnette won the inaugural world title in Park City in the US last year and is the current leader of this year's World Cup circuit.
But he heads to St Moritz on the back of eighth and ninth place finishes at the latest leg of the World Cup in Oberhof in Germany.
Both races were won by Latvia's Arturs Klots.
Another Latvian, Alvils Brants, is only two points behind Bissonnette in the overall World Cup standings, on a score of 582 compared to the Canadian's 584.
Canada's Brian McPherson is third overall on 560.
The first two World Championship runs will take place tomorrow, before runs three and four on Sunday (February 5).
Bobsleigh was provisionally accepted for the Beijing 2022 Winter Paralympic programme in September.
An application for skeleton to be included was not successful though, due to the sport not fulfilling a number of the criteria needed.