Goal ring (New Super Mario Bros. U)
From the Super Mario Wiki, the Mario encyclopedia
The goal ring is an object found in the Challenge Mode of New Super Mario Bros. U. It is a cyan and blue-striped ring with a red flag on top. They are used as a substitute to the Goal Poles found in side-scrolling levels. When a player passes through a goal ring, the timer stops and the challenge ends.
Challenges featuring goal rings