Graham Hill has been a swimming coach for the last 32 years, attending 5 Olympic Games (2000, 2004,2008, 2012, 2016). Under his guidance Terrence Parkin picked up the silver medal in the 200m breaststroke at the 2000 Sydney Olympic Games and Darian Townsend the Gold in the 4 x 100m freestyle relay at the 2004 Olympics in Athens.
At the 2012 Olympic Games, Graham had 5 swimmers in his charge, among them, young sensation Chad Le Clos, gold medallist in the 200m Butterfly and silver medallist in the 100m butterfly. Again in 2016 his prodigy Chad Le Clos won silver medals in the 200m freestyle and the 100m butterfly.
Graham was appointed Head Coach of Swimming South Africa in 2011, which is a position he still holds and is currently the Chairman of the FINA Coaches Committee.