LittleBigPlanet

You don't have to start the race right away. Get to the third checkpoint first, after using the first two. Then you return to the very beginning. Start the race (the main thing is to cross the start), blow yourself up through the menu, you will be reborn at the 3rd checkpoint, saving 1500-2000 points. Now you just run to the finish line and you will have 5000-6000 points left in stock. Proven method. I did this myself with a friend.

The main thing here is to start the race when the water drops and, in principle, you should complete it without any problems. And also on the way you need to collect bubbles, they slow down time