World 3-Cannon (New Super Mario Bros. 2)
From the Super Mario Wiki
The player begins on jungle grounds in front of the cannon. Entering the cannon will initiate a countdown, then the player is blasted off. The player will not be able to stop running throughout the level. First, Mario/Luigi will come across a Scuttlebug, followed by a Wiggler. Then a Red Ring can be found in between a Scuttlebug and a Wiggler. If all the Red Coins are collected, the player will receive a Gold Flower in their storage. The level continues with more Scuttlebugs and Wigglers. After a few of them, the level ends.