Marti was born in
Zofingen,
Aargau, Switzerland and from the age of two, was raised in England. She was a member of Bromley Ladies Athletics Club. A prodigious talent, Marti cleared 1.81 m at the age of fourteen in 1982 before achieving 1.88 m at 15 in 1983 to win a
European Junior Championships bronze medal. This still stands as the UK's age 15 best. The following year, she improved to 1.89 m and was unlucky not to earn selection for the 1984 Olympic Games. Her 1.89 m stood as a UK Under 17 record for 29 years until Morgan Lake cleared 1.90 m in 2013. Marti's career was then slowed by the debilitating illness
ME. She withdrew from the 1985 World Indoor Games. In 1986, she finished ninth in the final of the World Junior Championships. From 1985 – 1990, her best result was 1.86 m. Marti returned to top form in 1991, when she improved her -year-old PB to 1.94 during the indoor season, to equal
Diana Davies's UK indoor record. She went on to clear 1.91 m to finish a fine fifth in the final at the
World Indoor Championships in
Seville. At the
1991 World Championships in Tokyo, she failed to reach the final, clearing 1.86 m in the qualifying round. In 1992, she competed at her first
Olympic Games in Barcelona, where she achieved an outdoor PB of 1.92 m in the qualifying round before clearing 1.91 m for ninth in the final. She remained the last British woman to reach an Olympic high jump final until
Morgan Lake qualified for the 2016 final in Rio. Shortly after the 1992 Games, she improved her outdoor best to 1.93 m. Marti would continue as the UK's most consistent jumper for several years, although she was forced to withdraw from the 1993 World Championships due to injury. In 1994, she cleared 1.91 m to win a bronze medal at the
Commonwealth Games in Victoria, Canada. In 1996, she achieved her lifetime outdoor best of 1. 94 m. She cleared this height in both Tallinn in June and again in Birmingham in July, at the British Olympic Trials. At the
Atlanta Olympics, she failed to reach the final with a best of 1.85 m, for 19th overall in qualification. Marti reached her peak indoors in 1997, by clearing 1.95 m at the Birmingham indoor Grand Prix, to add one centimetre to the UK indoor record that she held jointly with
Diana Davies and
Jo Jennings. This height was also equal to the UK outdoor record. The record stood for 17 years, until
Katarina Johnson-Thompson cleared 1.96 m on 8 February 2014. Also, that year she reached the
World Indoor Championship final in Paris and competed at the
World Championships in Athens. After a few low-key years, Marti concluded her international career by finishing sixth at the
2002 Commonwealth Games in Manchester. == National titles ==