Oh baby. We hope you are ready. Indoor track is BACK in a BIG WAY with action all over the US. In Boston, American Shadrack Kipchirchir wants to run the low 7:30s in the same race where the LRC singlet will be looking for a big PB. In NY, Ajee Wilson and Charlene Lipsey go for the AR and Robby Andrews and Clayton Murphy clash over 800.  In Seattle, these big names will be racing - Galen Rupp, Yomif Kejelcha, Shalane Flanagan, and Sifan Hassan. Plus marathoners Scott Smith & Aaron Braun chase sub-4:00.