Saturday qualifications and Sunday finals for the ultimate event of the SN2017 World Championships.
Marielle Thompson and Jean Fred Chapuis enter weekend as favourites, but anything can happen on race day.
USA and French squads looking strongest ahead of Thursday's qualifications.
At the halfway point of the Sierra Nevada 2017 world championships, a look back at some of the most memorable moments so far...
The USA's Ashley Caldwell and Jonathon Lillis share aerials gold medal glory.