MTV

The official runtime for Stephen King’s “It” adaptation has been revealed, and Pennywise the Clown will terrify you for more than two hours.

According to the British Board of Film Classification, “It” will clock in at 135 minutes, or two hours and fifteen minutes. On IMDb, the same runtime is listed. After all, the book is 1,138 pages long, so the movie has to run longer to cover all of the book’s main characters and their strong personalities, respectively.

The kids who get threatened by the diabolical clown are played by Finn Wolfhard, Jaeden Lieberher, Jack Dylan Grazer, Wyatt Oleff, Chosen Jacobs and Jeremy Ray Taylor. Bill Skarsgard will star as the iconic monster, first played by Tim Curry in the TV adaptation.

Also Read: 'It' Producer Says Tilda Swinton Was Eyed to Play Pennywise the Clown

Andres Muschietti is directing the film.

Last week, producer Barbara Muschietti said that Tilda Swinton was in the running to play Pennywise. Skarsgard came in and was eventually cast in the role, and he has since said that he’s scared the child actors on set while wearing his costume.

“Bill came in and blew our socks off,” Barbara added. “Because he was doing his very own interpretation of Pennywise, very erudite…very, very familiar with the novel and with Pennywise in the novel, which for us was a huge help, because we went into the casting process with the book in mind.”

Also Read: Bill Skarsgard's Pennywise Made 'It' Child Actors Cry on Set

A representative for New Line has not yet responded to TheWrap’s request for comment.

“It” arrives in theaters Sept. 8.

Let's Revisit the 1990 'It' TV Miniseries: 5 Floating Facts About Pennywise and Friends

With the new film "It" in theaters now, we asked John Campopiano -- one of several filmmakers doing a documentary about the 1990 version of Stephen King's "It" -- to take us deep into the history of that TV miniseries. Here are five things we didn't know.
Stephen King has said he decided to make his scary creature a clown because clowns scare children more than anything else. "They do have that kind of monstrous thing going for them," he told Conan O'Brien.
Jonathan Brandis, who portrayed young Bill Denbrough in "It," had worked on another Stephen King film adaptation the year prior. He did the voiceover for the opening scenes of the 1989 film "Pet Sematary."
Tim Curry's Pennywise makeup changed quite a bit during the production. It went from being very dramatic and articulated to more subdued. Curry had recently worked on the film "Legend" and was not excited about being in a lot of makeup again. He and director Tommy Lee Wallace agreed that he would have minimal makeup.
Despite being set in Derry, Maine, the miniseries was actually shot in and around Vancouver, British Columbia.
Many fans dislike the ending of the miniseries, specifically the scenes involving the giant spider. Even cast and crew members, including Wallace, have expressed disappointment with how it came together.
Bonus: King once had his own scary interaction with a clown: a man dressed as Ronald McDonald once said next to him on a first-class flight, lit up a cigarette and ordered a gin and tonic. He told King he had come "from McDonaldland."
If you enjoyed this gallery, check out these 5 Things You Didn't Know About Pet Sematary...
... and this look at 5 Things the New 'It' Gets Right About Being a Kid in 1989.

1 of 9

With the new film “It” in theaters, we look back at the miniseries that made everyone hate clowns

With the new film "It" in theaters now, we asked John Campopiano -- one of several filmmakers doing a documentary about the 1990 version of Stephen King's "It" -- to take us deep into the history of that TV miniseries. Here are five things we didn't know.

View In Gallery