First, you need to complete the First Steps level to unlock some stickers.
Then, replay the level. Just after the beginning, there is a shoe-shaped sticker pad. Simply place your new shoe sticker on it, and the race starting line will spawn right in front of you and unlock this trophy.
Note that starting the race will also spawn a "bird" for you to grab on to over the pit that usually requires you to die to proceed. This allows you to ace the level as well.