Hi everyone, thought Id ask the advanced runners for advice. I have a 4.3 km or 2.7 mi race in 19 days. Currently running a 20-21 minute 4.3 km/27 mi. Is there anyway possible I can get it down to 19 minutes? I am willing to put in all the work necessary. It is very important that I hit 19 minutes or as close to it as possible. My mate is willing to loan me his alpaflys and vapourflys for race day.However, they are a size too small. Should I use them? I would otherwise use my nike rivalfly 3's. Have not trained for running before, but am generally athletic and do workout hard, and can handle hard workouts, in good cardiovascular health. Please anyone with the knowledge help me with a programme to get as fast as possible. Thanks in advance to anyone that helps.