Clarion West Writers Workshop is an intensive six-week program for writers preparing for professional careers in science fiction and fantasy. It runs annually from late June through the end of July. The workshop is limited to 18 students per year. Each of the six weeks is instructed by a different professional writer or editor. The roster of guest instructors changes yearly. Founded in Seattle, Washington in 1971, the workshop has been held continuously since 1984. Clarion West celebrated its 25th anniversary of continuous instruction in 2008.