<Ul> <Li> Wallfisch </Li> <Li> Elgar </Li> <Li> Balfe </Li> <Li> Zimmer </Li> </Ul> <Tr> <Td_colspan="3"> Total length: </Td> <Td> 59: 46 </Td> </Tr> <P> The world premiere was on 13 July 2017 at Odeon Leicester Square in London . The film was theatrically released on 21 July, projected on IMAX, 70 mm and 35 mm film . It is the fourth Nolan film to be released in the third week of July, a period in which Warner Bros. Pictures has previously achieved success . It was Nolan's preference that the film opened in July instead of the northern - hemisphere autumn awards season . The film was initially screened in 125 theatres in 70 mm, and was the widest release in that format in twenty - five years . Dunkirk received a special IMAX screening at the 2017 Toronto International Film Festival, the first Nolan film to appear at the festival since Following, nineteen years earlier . After its original release of 126 days, the film was re-released in fifty IMAX and 70 mm theatres on 1 December, expanding to 250 additional cities in January 2018 . Dunkirk was released digitally on 12 December 2017, and on 4K Ultra HD, Blu - ray, and DVD on 18 December in the United Kingdom and 19 December in the United States . </P> <P> The announcement teaser debuted in cinemas ahead of Suicide Squad and was released online on 4 August 2016 . According to data analytics firm ListenFirst Media, it generated the most Twitter engagement of any trailer released that week . The first full - length trailer was released on 14 December 2016, alongside a five - minute cinema - exclusive prologue shown before selected IMAX screenings of Rogue One: A Star Wars Story . Dunkirk was the most discussed film that week according to media measurement firm comScore . The prologue returned for a week before selected IMAX showings of Kong: Skull Island . Footage from the film was well received at CinemaCon 2017 . Warner Bros. aired a TV spot to coincide with the 2017 US national basketball playoffs . The official trailer was released on 5 May 2017, after a countdown on the film's website and four fifteen - second teasers leading up to it . Dunkirk was again the most discussed film that week according to ComScore . The video game developer Wargaming included in its titles World of Tanks, World of Warships and World of Warplanes missions and rewards related to the film . On 6 July, Warner Bros. released another trailer, which for the third time was the most discussed film of the week . The prologue was shown at selected Wonder Woman IMAX screenings in July . It also toured nine cities in three European countries with a mobile cinema . </P>

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