From the Super Mario Wiki
Rickety Sprint is a Time Attack Challenge in New Super Mario Bros. U. The setting of the course is based on the Meringue Clouds level, Seesaw Shrooms, and its name is derived from the phrase "lickety-split".
The player must make it through Rickety Sprint by running on top of multiple Tilting Mushroom Platforms and Pink Stretching Mushrooms. Enemies in this challenge include Fuzzies, Piranha Plants, Paragoombas, Koopa Troopas, Lakitu, and Spinies.
Names in other languages