Complex sentence: The Queen Mother Champion Chase is a Grade 1 National Hunt chase in the United Kingdom for five-year-old and above horses run over a distance of 2 miles (3,219 metres) at Cheltenham Racecourse during the Cheltenham Festival in March.
Split into simpler sentences: The Queen Mother Champion Chase is a Grade 1 National Hunt chase in the United Kingdom for five-year-old and above horses. It is run over a distance of 2 miles (3,219 metres) at Cheltenham Racecourse during the Cheltenham Festival in March.