NASCAR Sprint Cup Series CampingWorld.com 500 Phoenix International Raceway Distance: 312 miles (312 laps) Sunday, March 15 3:30 p.m. (ET) TV: FOX, 3 p.m. (ET) Radio: MRN, SiriusXM NASCAR Radio NASCAR XFINITY Series Axalta Faster Tougher. Brighter. 200 Phoenix International…