Salt River Valley is in Arizona.
The men 's 400 metres hurdles at the 1988 Summer Olympics in Seoul , South Korea had an entrylist of 38 competitors , with five qualifying heats -LRB- 38 runners -RRB- and two semifinals -LRB- 16 -RRB- before the final -LRB- 8 -RRB- took place on Sunday September 25 , 1988 .. 1988 Summer Olympics. Athletics at the 1988 Summer Olympics