This is level 38 of the Main tunnel.
With the Runner, use the crumbling tiles and then jump.
With the Skater, do the same thing, except you have to make longer jumps.
During the gameplay with the Runner, you can try to land on the yellow platforms, but most of the time you will land on the crumbling tiles between platfroms. Then, you can jump again, using the short jump, and if you adjust your jump well enough, you would be very likely to land on another crumbling tiles platforms again. Repeat the process until you reach the end of the level.