Yes it was in college. For some fundraiser I raffled my services off running one errand for the buyer, but only if the buyer donated 10 cents for every mile I ran that week. The errand was running across town and back to purchase a bus ticket for the woman who bought my service.
I ran 121 miles that week.
This was back in the 70's when big mileage was the rage.
Since 100 is an arbitrary number and miles an arbitrary distance measurement, I used to measure all my runs and weeks in kilometers. It was easier and better to try to maintain a minimum of 100 kilometers a week than 100 miles a week.
I almost always had the satisfaction of writing down a triple digit number for the total distance I ran every week.
I think the 100k/week goal is more sane and rational, but still high enough to provide a good training stimulus (esp with tempo runs, intervals, races, school, work and life mixed in).
40 years later I am still running 100k/week, and I have not had many injuries or burnt out mentally yet.