April 20 2013 Kansas STP 400 Practice #2 Speeds and 10 Lap Averages Ryan Rantz Practice Speeds 2013 Kansas STP 400 Practice Speeds, Fastset In practice, Kansas 10 lap average speeds, Kansas STP 400 Practice #2 Speeds, Kansas STP 400 Speeds, Kansas Ten Lap Average Speeds, NASCAR Kansas STP 400 Practice #2 Speeds and 10 Lap Averages (PDF) Wondering More