Generally , races are single events of at least 300 kilometers , though in 2011 , the minimum distance was reduced to 250 km due to the 2011 Tōhoku earthquake and tsunami . Furthermore , the 2016 Kumamoto earthquakes forced the GTA to cancel its Autopolis round , substituting the race with Super GT 's sole instance of a double-header event , comprising two 250 km races held at Motegi
2016 Kumamoto earthquakes
2016 Kumamoto earthquakes
Super GT