Dekoboko Densetsu: Hashiru Wagamanma

This can barely qualify for a racing game, as you can finish each race if you don't get killed at any of the six places, which again is a bit arbitrary as everyone finishes the race approximately at the same time.

The ending at 29:39 will first show you the cup prize, which is the same no matter which place you finish. After that at 34:12 you get three choices, which are three different paths of how the ending will be concluded. I recorded all three, so check them out.