Video: The Guinness World Records says that Catalina Alexandru Duru just pulled off the farthest journey ever travelled on a real life hoverboard: 275.9 metres. You can see him rise up on the board and start cruising through the air over a lake with nothing but invisible underneath him in the video below.
The hoverboard Duru uses is more like a super powerful quadcopter-type hoverboard and not a hoverboard in the Back to the Future sense but it's still pretty awesome. And also, the added bonus of not using BTTF-style? This one works over water.