April 19 2013 Kansas STP 400 Practice #1 Speeds Ryan Rantz Practice Speeds 2013 Kansas STP 400, Kansas 10 lap averages, Kansas Average Speeds, Kansas Practice Speeds, Kansas STP 400, Kansas STP 400 Practice #1 Speeds, NASCAR, Practice Speeds Kansas STP 400 Practice #1 Speeds (PDF) Wondering what happened in practice? More