The purpose of running itself is not going to burn many calories and cut you up as many people think, unless you are running ridiculous distances. The point is mainely to improve your cardiac output which will decrease blood pressure and heart rate will steadily fall as more oxygen is utilized with every beat. What you are actually doing is opening up more mitochandria in your muscle cells and THIS is what burns more calories, the more you have open, the more energy you can utilize.
Running will definitely get you ripped, if you are not concerned about how tired you get after a jog then you are not concerned about losing weight, the reason you are fatigued is because your body is not utilizing oxygen fast enough, your heart cannot pump the O2 efficiently enough and your muscle cells cannot utilize the O2 fast enough. If I were you I would simply just...keep..running...