Movie theatre runtimes indicate the length of a movie, but it often isn't clear if they include the trailers that are shown before the movie. Generally, movie theatre runtimes do include the trailers, as they are part of the overall experience of going to the movies. Trailers can range from 2-5 minutes in length, so it's important to keep this in mind when planning to see a movie. It's also worth noting that some movie theatres may not include the trailers in the runtime, so it's best to double check with the theatre if you're particularly pressed for time.