Aintree is a village and civil parish in the Metropolitan Borough of Sefton, Merseyside, England. Historically in Lancashire, it lies between Walton and Maghull on the A59 road, 5+1⁄2 miles northeast of Liverpool city centre, in North West England. It is best known as the site of Aintree Racecourse, which since the 19th century has staged the Grand National horserace.