This is level 8 of the N-Tunnel.
If you have the Skier, use her to beat this level. Normally with a spiral level like this, the Runner is fine, but the Conveyor tiles can easily make you spin out of control. Even worse, the winding path is narrow and you don't have much leeway for your turns. But, all you have to do is follow the spiralling path to the end of the level, and there's not much strategy. You will need to make quite a few short jumps though.
If you haven't got the Skier, use the Runner. The gameplay method is the same, except that it is harder and faster. You can try to keep jumping, so that your speed is slowed to a minimum, which means your maneuverability is increased to maximum. In this case, you may be able to make it out of the spiral more easily.