The world record is on everyone's mind and Eliud Kipchoge (London champ) and Emmanuel Mutai (2:03:13 PB) will give it their best go in Berlin on Sunday? Check out our preview as we assess their chances, discuss whether Geoffrey Mutai is done, and wonder if Reid Coolsaet can get the 39-year old Canadian record. Plus Berlin, not Chicago or New York, may have the most # of elite Americans this fall in Shadrack Biwott, Sean Quigley, Matt Llano and Gabe Proctor 

Meb Keflezighi goes for the three-peat against a field that includes Josphat Boit, Shadrack Biwott, Diego Estrada and Girma Mecheso. In the women's race, marathon specialists Annie Bersagel and Lauren Kleppin will attempt to hold off U.S. 10,000 champ Kim Conley. Sara Hall and 2012 Olympian Janet Bawcom are also in the field. Races start at 6:55 a.m. CT on Sunday.

The 2:05:25-man will face Debeb Tolossa and Aaron Braun. The women's race is led by 2:25:39 runner Fatuma Sado who faces Biruktait Degefa (2:26:22) and Serena Burla. The half will once again be the US Half-Marathon Championships and features Meb Keflezighi, Josphat Boit, Matt Llano, Janet Bawcom, Sara Hall, Kim Conley and Becky Wade.

Bobby Curtis led the way in 2:11:20 in 9th, Jake Riley had a nice debut and Gabe Proctor turned heads by going out hard and PRing.