Cheat mode:
Successfully complete championship mode without using any tokens. All tracks, cars, skins, random checkpoints, speech test, and other cheat options will be unlocked.

Cheat Sheet option:
Win the Rally Days 1 race without collecting any pick-ups.

All skins:
Collect the three hidden pick ups in the Valentine's Day race. The first two are located at each tower. The third is found behind the Skater picture in the jungle.

Unlock Bebe:
Lose the Cowdays race without getting any health power-ups.

Unlock Big Gay Al:
Win the Pink Lemonade race.

Unlock Mephisto:
Win the Independence Day race.

Unlock Mr. Garrison:
Activate all four checkpoints on the Rally Days 2 race.

Unlock Mr. Mackey:
Win the Spring Cleaning race.

Unlock Mrs. Cartman:
Drop off all lemonades on Pink Lemonade Race without letting anyone else get to a checkpoint.

Unlock Ned:
Collect over twelve turbo pick ups (caffeine, Terrence, Philip, etc.) in the Independence Day race

Unlock Pip:
Only activate checkpoints one and four on the Rally Days 2 race.

Unlock Satan:
Win the New Year's race.

Unlock Scuzzlebutt:
Find a Phillip Phart on the Easter Egg Hunt race. Then find the waterfall and Phart your way to the Golden Cow next to the waterfall.

Unlock Sheila Broflovski:
Collect the Pot Pie next to the building on the Easter Egg Hunt race.

Unlock Shelly:
Hit the three golden cows in the Valentines Day race. Their locations are on the two buildings and through the secret wall.

Unlock Terrance and Phillip:
Collect the four hidden power-ups in the Christmas race.

Unlock Tweak:
Collect five caffeine pick-ups in the Spring Cleaning race.

Unlock Visitor:
Collect the hidden power-up above checkpoint one and the another power-up that is between check point four and the wood bridge in the Memorial Day race.

Random checkpoints:
Successfully complete the game in championship mode.

Speech test:
Successfully complete the game in championship mode.

Unlock Cartman Cop:
Hit Chicken Lover five times with the salty balls in the Read A Book Day race.

Unlock Damian:
Win the New Year's race and be the only racer to touch the millennium key.

Unlock Death:
Win the race Halloween race after only dropping off four candies at a time.

Unlock Grandpa:
Win the Halloween race.