text: if i eat 800-1200 calories a day and run 4-5 miles a day how many calories am i burning? i'm 5'5, 15 years old, 202pounds. how many calories do i burn by running 4-5 miles a day let's do some math:  running 4 miles @ a 10 min mile for 202 lbs = 636 calories your basal metabolism for your age approx = 13x multiplier  based on 1000 calorie intake per day, you'll burn roughly .75 lb per day that you run.  gradually less each week because you'll weigh less.  you can get motivated by checking the photos of our college age success stories:  http://tinyurl.com/ybyvhb