How many days did the production of Eyes Wide Shut last?

The production of Eyes Wide Shut lasted 400 days.

Principal photography began in England on November 4, 1996, and the unusually demanding shoot continued until June 1998. Guinness World Records has recognized it as the longest continuous film shoot, involving more than 15 months and an unbroken 46-week stretch.

The original plan was dramatically shorter: Kubrick expected filming to take about three months. His perfectionism, repeated takes, changing script pages, and preference for building controlled studio environments extended the schedule. One brief scene of Tom Cruise walking through a doorway was reportedly filmed 95 times, while some scenes were repeated more than 70 times.

The 400-day figure refers to production or filming, not the entire process from conception to release. Post-production continued afterward, and Kubrick delivered his final cut to Warner Bros. in March 1999, shortly before his death. The film premiered in July 1999.