Wario's Gold Mine

There is a shortcut at the end of the speed bumps and ramps which you can hop over for you to cut a few seconds and put you ahead.

DK Summit

At the beginning of the course, drive about 1/8 from the start. Next, turn about 350 degrees. After that, use a mushroom to wheelie on a pipe under the bridge.If done correctly, you should bounce off and go through the bridge. Keep driving and hit the fence. Now, turn around and drive to the finish line. The lap should count. This is very useful.
Drive to where the slope is. Use a mushroom to boost under a boost pad. If the shortcut was done correctly, you should end up on the other side.
Before exiting the cave, trun to the left where the mine carts are and follow them to find a hidden path.

Daisy circuit

There is a shortcut near the beginning of the track, where racers can travel up a set of stairs (which slows them down) with a Boost Pad and a place to trick at the end.

When in the river, mushroom through the grass.
Use a mushroom to boost through the waterfall before the finish.

Koopa Cape

​Maple Treeway

If racers go through the area without the fence, there is a shortcut with Item Boxes and Boost Pads. This shortcut leads directly to the cannon and essentially cuts everyone else off, but this shortcut can slow the player down without a mushroom
As racers trick off of the wavy net, there are two trees with ramps on both sides. There are Item Boxes on either side and Boost Pads located at the ends of these ramps which can be tricked off of.

After going through the tunnel, go on the higher ledge, and halfway through, stop, turn to your left, and boost with a Mushroom off the rock and onto the track. You skip half the track this way.
At the start of the race, turn around. There is a rock to the right. Boost onto this. Travel carefully around it. It has to be done correctly or else the lap count will not work. On the final lap, boost off of the rock and cross the finish line.

​Grumble

Volcano