From a Friday morning, about 5 am CET (translated), to Monday 10 pm CET.
I was 16, and in boarding school in Germany. It was the first week of May, and had been for a week in Chile to my grandfather's 70s birthday. That Friday my mom and me returned to Germany. This included a 7-hour stop over in New York, which we used to do some sightseeing.
After some flight issues, we arrived Sunday afternoon in Germany, and I traveled by train back to school. There I found my best friend in tears because her boyfriend had broken up with her. Some older boys decided it was a good day to go drive to the Netherlands, and we asked if we could join.
After some car issues, we arrived Monday very early morning in Zandvoord. Had breakfast, a walk along the beach, and returned via another city with a wonderful lake to school. Some hour or two talking to the other girls, and then I passed out.
Only drugs involved: nicotine, alcohol, and lots of caffeine.
I might have napped every now and then, but at the time I was already suffering from insomnia, and hadn't even heard about z drugs or benzos.