The 2015 Western Games and Creedmoor Cup are taking place at the Ben Avery Shooting Facility in Phoenix (Arizona) from October 9 through October 18.
The SMGC has the Western Games and Creedmoor Cup program available for download in PDF, but the official up to date information should be obtained directly from Civilian Markmanship Program at http://thecmp.org/competitions/cmp-travel-games/western-games/.