m and 5000 m, setting six Irish national records in the process, including five in the space of 11 days in mid-August following the Barcelona Olympic Games. At Barcelona, in the 3000 m final, O'Sullivan was always in contention, and hit the lead in the back straight on the final lap, but she was eventually outsprinted and finished fourth. Narrowly missing out on an Olympic medal was made all the more frustrating when the silver medalist from the race Tatyana Dorovskikh tested positive for a banned substance the following year. In the 1500 m, she finished only 11th in her semi-final and did not qualify for the final. She finished 1992 by winning the Grand Prix Final for the 5000 m. 1993–1995 1993 During 1993, O'Sullivan established herself as one of the world's top middle-distance runners. By the time the World Championships came around, she was the clear favourite for both the 3000 m and 1500 m. However her hopes in the 3000 m were dashed by the performances of three Chinese athletes who would later in the year go on to smash the world record multiple times. The winner, Qu Yunxia, finished in a championship record of 8:28.71, with Zhang Linli and Zhang Lirong following in second and third respectively. A month later Qu would go on to set a 1500 m world record of 3:50.46. O'Sullivan finished the race 4th in a time of 8:33.8. Six days later she won the silver medal in the 1500 m in a time of 4:03.48, again behind a Chinese athlete. Five days after the championships, at the ISTAF meet in Berlin, O'Sullivan recorded the season's best time over 5000 m of 14:45.92, which moved her to third on the all-time world list. Soon afterwards she closed the year by winning the Grand Prix Final for the 3000 m and finished 2nd in the Mile. She finished the Grand Prix season in 2nd place in the Woman's Overall competition. 1994 During 1994, O'Sullivan dominated international distance running. She set the fastest time of the year in four events, the 1500 m, 1 mile, 2000 m and 3000 m, and the second fastest time in the 5000 m. On 8 July, at Edinburgh, she broke the 2000 m world record, setting a new time of 5:25.36. This record stood until Genzebe Dibaba of Ethiopia broke it on 7 February 2017. The next week,