Image Credit: COURTESY OF NETFLIX (C) 2025 It might be New Year's Eve, but it's also the most heartbreaking day for Stranger Things fans. The finale, titled "The Rightside Up," is being released on December 31, 2025, right at the turn of the new year. So, the countdown to 2026 might be a tear-jerking one for viewers. But for those going to theaters to watch the ending, how long is the finale episode? It's a historic day for TV, as one of Netflix's most successful series concludes. The Vol.