It had been a question posed to the stars for years: How long will this show continue? How long can it continue? “Even my mom and dad were like, ‘When are you going to be done with this?’” Ackles says with a laugh. It was a decision the network and studio had ultimately put into the actors’ hands, and it was a conversation they’d been having for a while. Back in 2016, Padalecki told EW, “If we don’t make it to [episode] 300, I think Ackles and I will both be truly bummed.” But in season 14, they hit 300…and then kept going. While filming episode 307, they announced the upcoming 15th season would be the end, which will bring them to a total of 327 episodes when all is said and done. “[Jared] and I were always married to the fact that we never wanted to go out with a diet version of what we had,” Ackles says. “We wanted to have enough gas left in the tank to get us racing across the finish line. We didn’t want to limp across.” Padalecki remembers the moment it hit him — not the decision to end it, but rather the opposite. “We had that moment where he and I both realized that we didn’t want it to end,” he says. “It finally got to a point, ironically, where it was like, ‘I never want to leave this. I could do this until the day I die, and then if I get the choice when I’m dead, I’ll re-up!’ But you never want to be the last person at a party. We just knew. That’s not to say there haven’t been vacillations, but we all trust the decision that was made.”