Last published challenges
Coin Collector
Airship Fortress 3 : Collect 15 coins in 150cc, in Time Trial mode, with Koopa, in less than 1:10

Blue Toad's Challenge
Blue Toad Circuit : Finish in the 1st position in VS mode, in 300cc, in medium mode, with Blue Toad
With 8 participants, no teams

10 Coins in Blue Toad Circuit
Blue Toad Circuit : Collect all coins in Time Trial mode, in 150cc, in less than 1:50

Bikes for Bulborbs Approved
Battle Course 5 : Find Bikes for Bulborbs in 150cc, in less than 10s, with Biking Bulborb
With 8 participants, no teams

Bowser Stufffffff : Finish in the 1st position in VS mode, in 150cc, with 100 participants
In difficult mode, no teams

Bowser Stufffffff : Hit all item boxes in VS mode, in 150cc, with 1 participant

RATC
hampter circuit : Complete the track in less than 1:00 in Time Trial mode, in 150cc

Yoshi Speedy
GCN Yoshi Circuit : Complete the track in less than 1:50 in 150cc, in Time Trial mode

ultra champion
mario kart ultra circuit : Get all gold cups

Challenge for Nodac
Advanced Tutorial : Complete the track in VS mode, in 500cc, without using any item, without touching the walls, without reverse drifting, in 2nd place, in easy mode, with Petey Piranha, without being hit by a bobomb or a blue shell
No teams

Source Accurate
Cannonball Circuit : Finish in the 1st position in VS mode, in 175cc, by starting with 1s delay
No teams, with 8 participants, in difficult mode

Rail Tricks
Rail Race : Complete the track in VS mode, in 150cc, by performing 30 tricks
With 8 participants, in difficult mode, no teams

Railyard Coin Collecting
Rail Race : Collect all coins in Time Trial mode, in 150cc, in less than 30s

HARD
Hard : Survive more than 2:00 in 50cc, with 24 participants, by losing at most 4 balloons, with Wago, without touching the walls, having CPUs starting with 12 balloons, by starting with 6 balloons, while constantly accelerating
No teams

Coin collect
Cheeseway I : Collect all coins in VS mode, in 50cc, with 1 participant, with Luigi, in less than 45s

Turbo travicanso
Cheeseway I : Complete the track in less than 1:45 in VS mode, in 100cc, without touching the walls, by performing 30 Mini-Turbos, by performing 3 Super Mini-Turbos, with 1 participant, with Mario

Literally just get first
Cheeseway I : Finish in the 1st position in VS mode, in 150cc, in less than 2:00, in medium mode, without using any item
With 8 participants, no teams

Personal Healthcare Companion
Mario Kart Cross Dimension : Finish 1st 1 time in a row in VS mode, in 150cc, without using any item, with Baymax, without kart bumps
In difficult mode, with 8 participants, no teams

Tsukuba Showdown
Tsukuba Circuit : Finish in the 1st position in VS mode, in 150cc, in extreme mode, with 2 participants, without reverse drifting
No teams

Speed
Criss-Cross : Complete the track in less than 6:00 in Time Trial mode, in 150cc, with Bowser
