Gail Greenough became an instant celebrity in the equestrian world when she was the youngest and first rider ever to defy all odds finishing with zero faults to win the gold medal at the 1986 World Show Jumping Championships. She was the only woman and the only North American to capture the world title.

Greenough joined the Canadian equestrian team in 1983 winning an abundance of medals and ribbons over her competitive career, also qualifying for three World Cup finals. After studying at Foothill College, Greenough obtained a Bachelor of Arts Classics, Art History and Sociology from the University of Alberta. Outside of competing, Greenough owned and operated her own horse farm, was a television colour commentator, a coach at Atlanta 1996, a board Member with Jump Canada and a clinician.

Among her many achievements, Greenough was the recipient of the Sports Federation of Canada Achievement Award in 1984, Edmonton Sports Report Association Amateur Athlete of the Year in 1986, TSN Female Athlete of the Year in 1986, Alberta Achievement Award in 1987 and Edmonton YWCA Tribute to Women Award in 1988. In 1990, she was made a member of the Order of Canada. 

Greenough was inducted into the Alberta Sports Hall of Fame in 1994, Canadian Olympic Hall of Fame in 1998 and Jump Canada Hall of Fame in 2006.