The Denman Chase is a Grade 2 National Hunt chase in Great Britain which is open to horses aged five years or older. It is run at Newbury over a distance of about 3 miles (4,828 metres), and during its running there are eighteen fences to be jumped. The race is scheduled to take place each year in February.The event was originally named the Aon Chase, after its first sponsors Aon Group Ltd, and it was first run in 2000. It was promoted to Listed status in 2002, and to Grade 2 level in 2003.