Driven without oil

Hey guys, I’m a hobby-happy enduro rider. My fun machine is a Ktm XC 525. On the last tour it’s then apparently I’m coming home wash the ktm off and discover that the oil glass is broken. That must have happened about 1 hour before the end of the tour. Then I opened all the drain screws and there was only about 100ml of oil in the engine. But I came home without having noticed anything. What would you miss me?