Challenges completed by Bup64

Sapphire Extinguisher

Crystal Mines : Locate the Sapphire without drifting

Gold Man

Crystal Mines : Locate the Gold without falling

Ruby Goldberg Machine

Crystal Mines : Locate the Ruby without touching item boxes

Bowser Jr. wants to be as fast as his Dad

Bowser's Castle : Reach the Glider Ramp with Bowser Jr, in less than 42s

Bowser Jr. wants to be as fast as his Dad

Shifting Sand Land : Get to the Glider Ramp with Bowser Jr, in less than 37s

Speeding around Quicksand

Shifting Sand Land : Make it past the Tox Box Maze without falling, in less than 20s

The 5 Fun Guys Race

Mushroom Colosseum : Finish in the 1st position in VS mode, with Toad, with 5 participants

Colosseum Champion

Mushroom Colosseum : Complete the track in less than 1:20 in Time Trial mode

The Big Race (Hard)

Mushroom Colosseum : Finish in the 1st position with 30 participants

In difficult mode

I mean...there's only one thing you can bonk. So bonk it.

Mushroom Colosseum : Hint: It starts with the letter "P"

Using one of the Secret Stars

Slideaway Speedway : Get a star, than SLAM into the pipe.

No Drift Rally

4-Corner Speedway : Complete the track in less than 1:15 without drifting

Looking for the Blue Coin Switch

Slideaway Speedway : Break the Boxes.

Nostalgia

Slideaway Speedway : Get to the end (you can't go backwards) in less than 21s, with Mario, without using any item

Blast Away the Wall

Whomp's Fortress : Where the wall would be blasted

Shoot Into the Wild Blue

Whomp's Fortress : Get into the cannon

Yes, the hot spring was pink in EarthBound.

Saturn Valley : Relax in the hot spring.

I WANTED to write in Mr. Saturn speak, but I can't. At least you can tell what to do. Some challenge descriptions DON'T TELL YOU WHAT TO DO AT ALL, YET THEY GET ACCEPTED! >:(

Saturn Valley : Just test the circuit!

Don't get too cocky

Chili Volcano : Get in the hot part of the volcano without falling

Hug one of the Piranha Plants

Simple Plains : ow