Re : running relaxed, it is said that the real marathon is the training you put in, and the race itself should feel like a celebration. I am not anywhere near elite level but felt that for a lot of races. The hardships of the training enables a state of deep calm, joy and feeling like you are flying the morning of the actual race. Nights before races are often very bad, like a last storm before everything clears and your mind is finally empty when you get into the corral. Then, with a clear mind, you proceed to run with joy despite being physically tired by the training and sleepless night.