Khalifa ran at the 1983 World Championships in Helsinki, both in the 800 meters and over 1500 meters, but different from each in the flow. In 1984 he reached at the Olympic Games in Los Angeles the finals over 1500 meters and finished second in 3:37.11 minutes eighth place, about 800 meters he missed his fifth semifinal in 1:44.87 minutes only just the final. In 1985 Khalifa won the 1500 meter race at the World Cup in Canberra. His best finish at a world championship took place at the 1987 World Championships in Rome, when he was in fifth over 1500 meters in a track separation. At the
1988 Summer Olympics Khalifa reached the 1500 meters in the finals again. In the course of the race he led for a long time in the top, but fell in the final sprint to twelfth and last place. Khalifa studied at Loughborough University during the same time when
Sebastian Coe and
David Moorcroft studied. During his career in competitive running he was 1.77 meters tall and weighed 64 kilograms. He won the British
AAA Championships title in the 800 metres event at the
1980 AAA Championships. ==In popular culture==