Dathan stated he wanted to contest for the win at Chicago and possible run a 3 minute personal best in the area of 2:06. He's run enough marathon and all have been decent but nothing to his show he's better at the marathon then he is in the 5000m/10000m.
Does anyone think he should focus solely on the 5000m/10000m if he doesn't run a significant personal best at this years Chicago Marathon?