Roman Hackle however, won easily under top weight at Windsor Racecourse and started even money favourite for the rescheduled Gold Cup on 20 March. As part of the course had been ploughed up for wartime agricultural use the race was run over three miles, a quarter of a mile shorter than usual. Ridden by Evan Williams, the favourite was restrained in the early stages before taking the lead and never looked in any danger of defeat, winning easily by ten lengths from the outsider Black Hawk with the 1937 Grand National winner Royal Mail taking third at odds of 100/1. In his next start Roman Hackle finished third in the Lancashire Chase at Manchester Racecourse. Roman Hackle showed inconsistent form in the early part of the 1940/41 National Hunt season but appeared to have returned to something like his best when winning at Plumpton Racecourse in early March. He was started favourite to repeat his 1940 victory in the Cheltenham Gold Cup but ran poorly and finished unplaced behind Poet Prince. Roman Hackle returned for a third attempt at the Gold Cup in 1942 but fell in a race won by Medoc II. National Hunt racing was suspended in September 1942 and Roman Hackle was sent to race in Ireland. He recorded his last important success in 1945 when he won by a head at Leopardstown Racecourse although on that occasion he was receiving more than forty pounds in weight from the runner-up Prince Regent. In their book, "A Century of Champions", based on the Timeform rating system, John Randall and Tony Morris rated Roman Hackle a "poor" Gold Cup winner. Roman Hackle's name is commemorated in Roman Hackle Avenue, a residential street in Cheltenham.