Top rated challenges

It's Time!

Big Ben : Survive more than 1:30

Tiem

Big Ben : Eliminate 1 opponent by yourself

Time Trials

Big Ben : Finish the game in the 1st position

Time out!

Big Ben : Hit 3 opponents

'tis Big

Big Ben : Test the Arena!

missed boost

kart crossing : Go between the booster pads at the beginning.

Much Better.

Dark Mode Circuit : Finish in the 1st position

In difficult mode

MY EYES

Light Mode Circuit : Complete the track with King Boo

Brayc dat lohene Eye-tem Bohcks

Thwomp Castle 3 : Do as the title says.

I'VE FALLEN! AND I CAN'T GET UP!

Rooftop Speedway : Fall in the BEEG hole in the middle of the track

Smol Godzilla

Rooftop Speedway : Finish in the 1st position with Bowser

Y'know, thinking about it...how are there rainbows in space?

Colorful Spaceway : Finish in the 1st position without drifting, by starting with 20s delay

That's not Chocolate, Jimmy, don't eat it

Greatest Achievement Stadium : Break the Box in the mud.

City Fort

Block City : Survive more than 1:10 without losing any balloons

Some dusty dunes

Sandy Dunes Desert : Go in the sand South of the pyramid

Losin' the Marathon

Good Vibes Burg : Complete the track in 100th place, in easy mode

The Daily Drive

Good Vibes Burg : Finish in the 1st position with Toad

The Wild, Wild East

Sunset Valley : Go to the Eastern most point of the track

The HERO!

Sunset Valley : Complete the track with Link

What's the point?

Gambling Way : Go on the gray arrow sign