In Tail race you will need to collect as much as balls as possible.
They will be stored in your tail, but be careful! Then enemies can break it!

You will have to place the balls in your tube to build the bridge faster than your opponents. And then reach the finish platform.

Once you put the ball in the tube they will stay safe, so try to use the grey tubes, where you need to pay 4 balls, to make the map rotate to have closer your tube!