The Nickel Coin Mares' Standard Open NH Flat Race is a Grade 2 National Huntflat race in Great Britain which is open to fillies and mares aged four to six years. It is run at Aintree over a distance of about 2 miles and 1 furlong (2 miles and 209 yards, or 3,410 metres), and it is scheduled to take place each year during the Grand National meeting in early April.
The race is named after Nickel Coin, the winner of the 1951 Grand National and the most recent mare to win the Grand National. The race was first run in 2005 with Listed status, then was promoted to Grade 2 in 2016.[1]