Daisy Circuit
Nothing to say. But there is a passageway up some stairs with a boost at the very end and has bad offroad. So USE A MUSHROOM!!! If you could get one.
Koopa Cape
There are three jumps at the beginning for a boost, also a few Goombas here and there which you should avoid. Stay to the water as much as you can in the middle. When you are in the tube avoid the lighting and stay on the water. At the very end avoid the water on the inner side unless you have a golden mushroom and use it for that section. don't forget to take advantage of the halfpipe jumps scattered around the track.
Shortcuts
This is tricky. Right after you get out of the underwater pipe, there's a little waterfall on your right. Either use one of your mushrooms or drift on the waterfall if you're careful.
Maple Treeway
This track has a huge shortcut in the beginning. It's camoflauged, and it starts off slow. But you will hit a few boosts and an item block, which can possibly end you up with some thing like a mega mushroom in second place!Also, there are ample opportunities for tricks on this map. Take them. Hitting the small leaf piles will usually cause a mushroom or banana peel to fly out, and won't slow you down at all. Take advantage of the mushroom ones, and use the banana ones to set traps for your enemies. Mid-way through the track, there will be a wide-open area with two wrigglers. They can be very annoying, so avoid them if you can. Shortly after that, there is a net-like part of the track with a wavy surface. Shake the Wiimote constantly to rack up trick boosts. Just after that, make a hard left or right and aim for the area between the fence and the trees. You can get two boosts, an item block, and a trick jump for your efforts. If you miss, do tricks off the tree roots instead.
Grumble Volcano
The hardest Star Cup Course and parts of the track fall away after the first lap. Beware to the lava fireballs! If you are in first, you want to take the high paths, because they have ample boosts and trick opportunities, but players lagging behind should take the low routes, which have more item blocks.
Shortcuts
In Time Trials, choose Toad with the Quacker for this course. When you start the race, turn around to your left. There's a rock in front of your face. If timed correctly, use a mushroom to jump on the rock and don't forget; use a wheelie! Drive around the rock three times without bumping into any walls.