Karting??..

About twice a year, when I was in the local kart club long ago, we did a 45 minute enduro so to speak. Darn near a full tank of fuel on a KT.
the track I was talking about was the easier longer faster track that I took my friend to. There's another smaller track that's much more technical with many more corners and I had myself worked up to about 22 laps or so which took about 15 minutes.... That was before my accident..