sentences:  Later the Montgomeries purchased the Bogside area and built a new racecourse for thoroughbred horses, at which the Scottish Grand National used to be held.The race moved to Ayr Racecourse in 1966 after the closure of Bogside Racecourse, where the race had been run over a distance of 3 miles 7 furlongs (6,236 m) since 1867.The 13th Earl brought steeplechasing to Scotland.