Complex sentence: The Christmas Hurdle is a Grade 1 National Hunt hurdle race in the United Kingdom for four-year-old and above horses run over a distance of 2 miles (3,219 metres) at Kempton Park Racecourse during the King George VI Chase meeting on Boxing Day.
Split into simpler sentences: The Christmas Hurdle is a Grade 1 National Hunt hurdle race in the United Kingdom for four-year-old and above horses. It is run over a distance of 2 miles (3,219 metres) at Kempton Park Racecourse during the King George VI Chase meeting on Boxing Day.