Fair enough. I think Kipchoge is one of those breakthrough athletes who moves the sport significantly forward. That’s not in doubt. I guess I believe him when he says his “legs” are good for more. He has nothing left to prove in the marathon. I think he will be ready to call it quits clearly when he feels he can no longer perform at that level where WR is within his reach.
So I don’t know the answer to the question. He has already stated his goal to win the 2024 Olympic marathon in Paris. I don’t feel that is beyond belief at all. Maybe if he breaks is WR at 40+ I would question that.