A group in Canada have been playing D&D consistently together for 35 years:
The game takes place on what Wardhaugh describes as an “alternate version of our Earth” which also includes the continent of Tolkein’s Middle Earth, picking up 400 years after the destruction of the One Ring. The campaign has remarkably been near-continuous for 35 years. “Perhaps 3 weeks has been the longest we’ve ever gone” without a session, Wardhaugh says.
I’m in a group that’s been playing for at least fifteen, and even we have gone longer than three weeks without a session. Granted, when I moved it took us a while to sort out the logistics of how to DM a game from 300 miles away, but even then…
Never underestimate the power of storytelling.