It's simply a time trial. I guess he won the world's two-hour time trial.
But think of it like this: A basketball player could go to an empty gym with his coach and sink 50 free throws in a row. It's an amazing accomplishment. But it has nothing to do with a competitive basketball game. It doesn't mean if there are ten seconds left, and his team is down by one point, that he's going to sink his two free throws. What he did in the gym is pretty mid-blowing, but it's still not the same thing as making the free throws under the pressure of a game. It's a stunt. Kipchoge's performance was mind-blowing, but ultimately it was a stunt. A stunt that will sell a lot of Nike shoes.
Yeah I said it. Bring on the haters.