I'm just really curious about this. It's been a little over a year since Gravity Falls ended, with 40 episodes aired. Since then, reruns continue to air on Disney XD, airing between 6-8 times a weekday. Now, I get that the show was one of Disney Channel/XD's biggest animated hits, but based on the amount of episodes it has, this makes me wonder how long until the show completely fades away from US airwaves. Unlike Phineas and Ferb (which has more than 100 episodes to rerun for a long time), I just don't think Gravity Falls has enough episodes to run for (potentially) as long as the former (even if Disney XD airs only one rerun a day, the entire show would just last a month and few days). I'm not saying that the show should stop rerunning now since it just ended last year, but I'm talking about two or three more years down the line. I feel by around that time the show would overstay its welcome. Can anyone else predict how long until the show's rerun cycle continues? I myself just can't imagine the show rerunning for as little as three years.