A lightning strike that stretched from Texas to Missouri in 2017 was recently certified as the longest single lightning flash in recorded history. The strike stretched a distance that would take nearly nine hours to drive.

The 515-mile bolt stretched from East Texas to near Kansas City, Mo., a roughly eight-hour distance by car, according to the World Meteorological Organization. In comparison, the average bolt of lightning measures less than 10 miles, according to the National Weather Service.

The World Meteorological Organization says a lightning bolt that was visible for some 515 miles from eastern Texas through Missouri in October 2017 is now considered to be the world’s longest.