Complex sentence: The Winter Derby is a Group 3 flat horse race in the United Kingdom for four-year-old and above thoroughbreds run over a distance of 1 mile 2 furlongs (2,013 metres) at Lingfield Park Racecourse in mid March.
Split into simpler sentences: The Winter Derby is a Group 3 flat horse race in the United Kingdom for four-year-old and above thoroughbreds. It is run over a distance of 1 mile 2 furlongs (2,013 metres) at Lingfield Park Racecourse in mid March.