In 2017, Laura Muir broke which European athlete's indoor 1500 metres record that had stood for 32 years?

Laura Muir (born 9 May 1993) is a British middle-distance runner. She specialises in the 800m, 1500m, 3000m and 5000m. She is the 2018 European champion in the 1500 metres, a two-time 2017 European Indoor champion, winning the 1500m/3000m double, a feat repeated in 2019, and a two-time 2018 World Indoor Championship medallist, with silver at 1500m and bronze at 3000m. Muir is a 2 time Diamond League champion in 1500 metres, winning in 2016 on the original points format, and again in 2018 when she won the Diamond League Final in the new championship format.

At the 2017 European Athletics Indoor Championships in Belgrade, Muir took gold in the 1500 metres, breaking Doina Melinte's 32-year old championship record along the way, and followed it up by taking a second title in the 3000 metres with another championship record the next day.

Doina Ofelia Melinte (27 December 1956) is a retired Romanian middle-distance runner. She competed at four Olympics (1980–92), and won a gold medal in the 800 metres and a silver medal in the 1500 metres in 1984. She won the world indoor title in 1987 and 1989 and the European indoor title in 1985, 1988 and 1990 in the 1500 m.