Stewart was the 1973 Scottish champion and aged 18 at the time, represented the Scotland team at the
1974 British Commonwealth Games, participating in the
1500 metres event. A member of the
Birchfield Harriers, Stewart became the
British 1500 metres champion after winning the British
WAAA Championships title at the
1975 WAAA Championships. Stewart competed in the
1500 metres at the 1976 Olympics Games in Montreal, finishing in fourth place in her semi-final race and just failing to qualify for the final. Stewart won the gold medal in the 1500 metres at the
1977 European Indoor Championship in
San Sebastián and represented
England and winning a gold medal in the 1,500 metres event, at the
1978 Commonwealth Games in Edmonton,
Alberta, Canada. In 1979, Stewart regained the 1500m WAAA title at the
1979 WAAA Championships. == Personal life ==