Summary: Jason and Kevin discuss the staggering world records by Genzebe Dibaba and Mo Farah, Mutaz Essa Barshim's personal best, the end of an era for two marathon greats and the upcoming US Indoor Championships.<br> <br> Then, the guys are joined by Nick Scarpello of the Encinitas Mile to discuss the logistical challenges with staging a road race, attracting elite athletes on a limited budget and a potential dog mile world record.
