Challenges completed by nintendo64
Color Circuit : Finish in the 1st position in VS mode, in 200cc class
With 8 participants, no teams

Speed is key
Figure 8 circuit : Complete the track in less than 30s in Time Trial mode, in 200cc class

Step it up
Mario stadium : Complete the track in less than 45s in Time Trial mode, in 150cc class

Yay
Mario stadium : Collect 12 coins in Time Trial mode, in 150cc class

Easy
Mario stadium : Complete the track in less than 1:00 in Time Trial mode, in 200cc class

Richhhhhh
Bullet palace : Collect all coins in Time Trial mode, in 150cc class

Coin
music park : Collect 10 coins in Time Trial mode, in 150cc class

Moo-free Item Dash
Moo Moo Meadows : Hit all item boxes in VS mode, in 150cc class, without touching any Cow, with 1 participant, in less than 35s

Collectathon 1
Mario Circuit : Collect all coins in Time Trial mode, in less than 30s

Mario's Challenge: First Place Showdown
Mario Circuit : Finish in the 1st position in VS mode, in 150cc class, with 2 participants
In difficult mode

Piano Trick Master
Music Park : Reach the finish line in VS mode, in 150cc class, by performing 25 tricks, in less than 50s

Collectathon 4
Music Park : Collect all coins in VS mode, in 150cc class, in less than 25s

Backtrack Terror
Ghost Valley : Cross the broken bridge in VS mode, in 150cc class, by driving backwards, without falling, without touching any Boo, while in rear view

Boo Overload: Survive the Haunted Circuit
Ghost Valley : Pass through all the lighted areas in VS mode, in 150cc class, without touching any Boo, in less than 1:00

Yoshi Invasion
Yoshi Circuit : Finish in the 1st position in VS mode, in 150cc class, with 12 participants
In difficult mode, no teams

Secret maze
Giant Maze : You've been teleported to a secret maze. Find the exit! in VS mode

Bowser's poisonous traps
Neo Bowser City : Reach the cannon in VS mode, in 100cc class, with Mario, without drifting, without being hit by a poison mushroom, in less than 30s, while constantly accelerating

Big bounce in the cave
Dino Dino Jungle : Complete the track in Time Trial mode, by taking the shortcut in the cave on every lap

Right-handed coin collector
Delfino Square : Collect all coins in VS mode, without turning left, without drifting, without going backwards

Yummy mushrooms
Mario Circuit : Pick every mushroom on the ground in VS mode, in 50cc class, without being hit by any item, with Mario, while constantly accelerating
