This is a pretty straight forward achievement, first you must complete the "Team SSX" achievement in the World Tour:
The Team SSX achievement in SSX worth 25 pointsUnlock every member of Team SSX through World Tour (or purchase in Explore or Global Events) Once you have done this enter the Explore mode and earn a bronze medal or better in a Race event with all nine members of "Team SSX" who are listed below;
Zoe
Elise
Mac
Alex
Tane
Kaori
Psymon
Moby
Ty
There are several short, easy drop points that are well suited to this achievement;
'Fast Forward' on the Makalu peak in the Himalayas
'Broken Pass' on the Vorassay peak in the Alps
'Diamond Back' on the Boris peak in Siberia (suggested by koobz2142)
If this solution can be improved please comment.