Golden Gate Park track

Hold (L) + (C-Left) + (C-Down) at the track selection screen. The U.S. 101 track will become Golden Gate Park.
Indiana track

Hold (L) + (C-Right) + (C-Up) at the track selection screen. The Beverly Hills track will become Indiana.
San Francisco track

Hold (L) + (C-Right) + (C-Down) at the track selection screen. The Grand Canyon track will become San Francisco.
Extra vehicles

Hold (C-Up) + (C-Left) + (C-Down) at the car selection screen. The Muscle Car will become an All Terrain Vehicle, the La Bomba will become a School Bus, and the Devastator will become a Police Car.
Flashing lights and siren

Use the Bus or Police Car to get a new Hot Time. Enter your initials remain at the "Hot Times" screen. Scroll to the bottom of the display and hold "Analog-Left" for approximately thirty seconds. Press [Start] and begin a new race with the Bus or Police Car. Press (Brake) twice, then hold "Gas" to flash the lights of the Bus or turn on the Police Cars siren. The lights and siren will be active as long as "Gas" is held.
Turbo boost

Use the Bus or Police Car to get a new Hot Time. Enter your initials remain at the "Hot Times" screen. Scroll to the bottom of the display and hold "Analog-Left" for approximately thirty seconds. Press [Start] and begin a new race and press (Brake), (Brake), (Brake), "Gas", (Brake), "Gas" after each checkpoint. Although your vehicle will not exceed its top speed, it will accelerate faster. Note: This code is enabled only after you Cruise the USA three times to get your vehicle to the fourth level.
Two player upgrade

Normally in two player mode, only one of the players can get an upgrade for their car. To upgrade both players, race to the Washington D.C., quit, and save the game. Reset the Nintendo 64, and have player one beat the Washington D.C. course. Reset the Nintendo 64 again, and have player two beat the same course. Both players will now have their cars upgraded.
Dirty windshield

Drive in Iowa or Indiana in cockpit view to get bugs and bird droppings on your windshield.
Steering wheel falls off

When you play in two player mode, win a level with an average mph that has a 4 in it. Your wheel will come off after the hall of fame (if you get in it.)
Missing wheel

Finish a two player challenge game and continuously sweep the Analog-Stick in a clockwise "Full-Circle". The right front wheel of the losing players vehicle fall off after the car rotates about four times.
Alternate vehicle colors

Win the "Cruise The USA" mode with the difficulty set to 1, 3 or 5. The car used to win the race will be selectable in a new color. The alternate cars are faster then the original version. Press (C-Up) to select the alternate colors. Note: This also works with the three hidden vehicles.
Successfully complete the game as the Police Car to change the stripe from blue to green. Highlight the Police Car and press (Analog-stick Down) to change back to blue. Press "Analog-stick Up" to change back to green.
Rolling head

When entering your initials, go to the bottom of the screen and hold (Analog-stick Left). Eventually a head will roll by.


Falling coconuts



In Beverly Hills you can drive against the palmtrees. Coconuts will drop down.


Chicago



When you start racing, you are on the freeway. After the first two turns you have to see a broken car. If you hit this broken car, it will fly through the air and it will land just in front of the leading car.


Get New Awesome Cars



To get this cheat you will have to hold these three buttons at the same time. Up C, Down C,and Left C. You will do this cheat when you are about to select a car. You will get a police car, Jeep, and a school bus.


Cheat[Patrick Zeller]



To get the police car, school bus, or jeep, hold C-right+ C-up+ C-down on the car select screen(Note:this will not work on the car furthest to the right)


Make Your Enemy Spin Out



This trick works best when your in first, but it will work in any place except last. If an opponent or computer car is behind you and is trying to pass, try this: get directly in front of him to where he's almost touchin your car, then tap brake, but don't hold it down, he will crash into you and spin out and fall behind, and the impact from his car will push you forward.


Grand Canyon shortcut:



Stay along the right side of the road after the first check point. Follow the dirt ramp that appears, and cross the natural bridge at a fast speed.


Grand Canyon boulder:



Run into the large rocks on the side of the road at high speed. The boulders will gain speed as they roll down the road before smashing into the first place vehicle.


Washington D.C. warp:



Watch for the orange tinted brick wall on the left side of the road. Approach the wall, get on the grass, and jump through the crack to reach the next check point.


Iowa Woman:



Look for the single tree on the left side of the road after the first checkpoint. Face the tree and slowly run over it. A woman standing next to a sign with the word "DAWN" will now be visible.


Nitro boost



This code works just like the Flashing Lights Trick code. Be sure your name will be on the 'Hot lists'. Scroll to the end of the list and hold L for 40 seconds. A head appears in the screen. In each race, with each car you can obtain a nitro boost by pressing Brake, Brake, Brake, Gas, Brake and Gas.