This is level 61 of the Main Tunnel.
Note: After the Main Tunnel and the Winter Games, it would be a good idea to get the Child. Many levels can be passed with less work, and some completely bypassed like Level A-4.
This level, overall, is quite hard. As the Runner, don't be afraid to go down a little on the crumbling tiles, or you may not land on the next platform.
You could also just keep jumping as the Skater, but remember you can shorten jumps by hitting a wall mid-jump.
Or if you've taken the challenge and beaten the Low-Power Tunnel and obtained the Child, you could just jump in the middle of your current platform to reach the next one. Don't jump at the end or you might overshoot, and since there are a lot of sides, it's not easy to stop the jump.