Recreational Equipment Inc., commonly known as REI, is a privately held American retail corporation organized as a consumers' cooperative, selling outdoor recreation gear, sporting goods, and clothes via some 110 retail stores in about 30 states, catalogs, and the Internet. The company opens four to six new stores each year. REI's sales exceeded US$1.45 billion in 2009.
Created by the organizers of the Rock ānā Roll Marathon Series, the TriRock Series launched in San Diego on September 12, 2010 to a sold-out field of 1,200 triathletes. The unique format features a rocking competition, complete with live bands along the swim, bike and run courses, followed by a post-race party and concert. The series expanded to four markets in 2011, adding events in Annapolis, Seattle and New York.