Hidden Course:
After choosing the easy difficulty setting, select the Himalaya track . Enter the Skeleton tunnel, and turn to follow the alternate route to the left. Collect the medallion to open a hidden ATV course.

GameShark

Low Time P1
74852FB500000000
 
Low Time P2
DC887F6900000000
 
Low Time P3
56078BE100000000
 
Low Time P4
A613AD2700000000
 
Infinite Time
B326C6380000064F
 

     

Thanks to Revolution reader All Terrain!