You ran the race at a rate of 13 minutes per mile, what is the rate in feet per minute?

406.153846 or about 406 feet per minute

Step-by-step explanation:

Start by converting the 13 minutes per mile to feet per minute by turning the mile into 5,280 feet. So you run 5,280 feet in 13 minutes. Then you divide 5,280 by 13 so you get the amount of feet  per minute, hence about 406 feet per minute.

I didn't know if you needed an exact answer or to round so I gave you both :)