[6] After Earl Holding purchased Sun Valley in 1977,[7] the golf course underwent a redesign by Robert Trent Jones Jr. and reopened in 1980.

At its base is the Sun Valley Club, the sizable golf clubhouse for the resort, with a 25-acre (10 ha) practice facility and an 18-hole putting course.

Elkhorn is a split-design of Robert Trent Jones Senior and Junior; the father contributed the hillier front nine and the son the back, which is laden with water hazards.

[3] Sun Valley hosts the Killebrew-Thompson Memorial (KTM) golf tournament each August to help fund cancer research.

[10] Launched 48 years ago in 1977 by baseball hall of famer Harmon Killebrew of Payette and former congressman Ralph Harding, it originally honored Danny Thompson, a teammate of Killebrew's with the Minnesota Twins who continued his major league career after being diagnosed with leukemia, and died at age 29. Notable participants that first year were President Gerald Ford, House Speaker Tip O'Neill, and hall of fame slugger Mickey Mantle.