Every year the London Marathon puts on a show for the sport, with a strong international contingent of professional marathoners pushing themselves to new PRs and record-breaking times. This year, one American pro is entered, Boulder-based Patrick Rizzo...

Patrick Rizzo had a tremendous 2012 by all accounts, finishing with new PRs of 1:04:20 for the half-marathon and a 2:13:42 13th place effort at the Olympic Marathon Trials. Since graduating from North Central College, Rizzo has been a regular on t...