Halloween Tour (2021)

The Halloween Tour is the fifty-fifth tour of Mario Kart Tour, which begins on October 20, 2021 and will end on November 2, 2021. It is the eighth tour to have the same title as a previous tour, and it is the third tour in Mario Kart Tour to have the name "Halloween Tour". First announced at the start of the Autumn Tour, the tour introduces a new vampire-themed variant of Waluigi, as well as a new variant of the London Loop course.

This tour continues the Autumn Celebration that started in the Autumn Tour. Like that tour, it will feature unique challenges. The tour will also feature an upgraded Token Shop, which includes the Poison Apple Kart and Swooper. Like the 2021 Yoshi Tour, players will be able to obtain Blue Yoshi as a reward for placing high in the tour's ranked cups.

A seventh set of Expert Challenges will be made available at the start of this tour.