1-1  (Fullgame)

At the start, you should wait a little and boost after landing, otherwise you will have a chance of sidestepping to the side weirdly and having no speed.

Sidestep right until you see the first set of speed pads, then sidestep left, and re-boost into them.

Keep sidestepping and boost through the loop.

In the step-like section, sidestep to the left until you hit the wall while still holding boost and jump to the first step.

When you're physically over the first step, not landed yet, hold stomp to bounce, then boost as Sonic is in his bounce animation to go through the leftmost box, and sidestep left until you hit the magdash.

Do the magdash right as you're on the edge of the platform but before the spring so that you get less height, and aim for the platform where the motobugs are.

Keep holding forward and land on the platform where the higher motobug, and magdash off of it (may seem unintuitive, but it makes the magdash way more consistent than having to stomp on the platform and basically waste a little time).

For the last magdash you don't need to stomp, just let go of boost and you can land easier, especially with the strat mentioned above.

BONUS: at the last straight part, hold sidestep until the end and then sidestep right at the last possible second to save a little bit of time, but it's really not necessary.