Bonus Track:
At any track approach the first ramp and do an easy trick (Square, Triangle), at the second ramp do a medium trick (Square, Circle, Triangle) and at the third ramp do a hard trick (Square, X, Triangle, Circle). Then finish the race and the Bonus track will load.

Ride a Camel:
Select the level Africa 2. Press and hold R1, R2, L1, L2 for the entire race and win 7th place. Then choose the track again and you should be riding a camel.

Special Tricks:

Skateboard Triangle, X, Square, Circle

Snowboard Triangle, Square, X, Circle

Mountain Bike X, Square, Triangle, Circle and X, Circle, Square, Triangle

Roller blades Circle, Square, X, Triangle

The following work for any equipment types...

Easy Square, Triangle

Medium Square, Circle, X

Medium Square, Circle, Triangle

Hard Square, X, Triangle, Circle