Which Stranger Things season 4 episode has the longest runtime?

“The Piggyback” is the longest episode of Stranger Things season 4.

The ninth and final episode of season 4 runs for about two hours and twenty minutes, making it feature-length by television standards. It intercuts several groups: Eleven confronts Vecna, the Hawkins group carries out its attack, and Hopper, Joyce, and Murray fight at the Soviet prison.

The episode’s title refers to using a memory or mental connection to reach a target, especially Eleven’s attempt to enter Max’s mind. “The Piggyback” is often compared with “The Massacre at Hawkins Lab,” another long season 4 episode, but the finale is longer. Season 4 was released in two volumes, with the finale included in Volume 2.