Complex sentence: The Prix du Chemin de Fer du Nord is a Group 3 flat horse race in France for four-year-old and above thoroughbreds run over a distance of 1,600 metres (approximately 1 mile) at Chantilly Racecourse in June.
Split into simpler sentences: The Prix du Chemin de Fer du Nord is a Group 3 flat horse race in France for four-year-old and above thoroughbreds. It is run over a distance of 1,600 metres (approximately 1 mile) at Chantilly Racecourse in June.