London Loop 3

London Loop 3 is a race course in Mario Kart Tour. It is the third variation of the London Loop course, and it made its debut in the 2021 Halloween Tour. The course also appears as London Loop 3R (reverse), London Loop 3T (with ramps), and London Loop 3R/T (reverse and with ramps). This course is a favorite of Birdo (Black), Daisy (Holiday Cheer), Fire Rosalina, Mario (Baseball), and Waluigi (Vampire).

Halloween Tour (2021)
In the 2021 Halloween Tour, London Loop 3 served as the tour's signature course. It appeared as the first course in the Kamek Cup, the third course in the Lemmy Cup, and the location of the bonus challenge in the Toadette Cup. Its R/T variant appeared as the second course in the Pink Gold Peach Cup and the third course in the Toad Cup, its R variant appeared as the second course in the Yoshi Cup and the first course in the Luigi Cup, and its T variant appeared as the second course in the Mario Cup and the third course in the Peach Cup.