PHThe longest TV ad in history is 14 hours long
Created by Old Spice for a product that supposedly "lasts forever," the commercial features actor Terry Crews, among others, and is currently airing "for an eternity" online (you can watch the abridged version here).
But since that's not exactly possible on TV, a 14-hour version was put together and aired in São Paulo, Brazil, on December 8, 2018, earning the Guinness World Record for the longest TV ad ever.
(s) bestlifeonline