Forster finished 33rd in the marathon at the 1988 Summer Olympics and was the fastest English marathon runner of 1988.[1]
Forster won the Enschede Marathon, the Toronto Marathon and the Stockholm Marathon during his career and had two silver medals from the London Marathon (1984, 2:11:41 and 1988, 2:10:52). He was also a member of the England Cross Country teams competing in the World Cross Country Championships through the 1980s, winning silver team medals in 1982 (Rome) and 1987 (Warsaw). Forster won an individual silver medal in the 1987 European Club championships (Clusone, Milan).[2]