Muskrat Creek to Carter Gap

Another 12+ mile day - from Muskrat Creek shelter to Carter Gap. My feet are feeling the high miles, but no blister pain...just the balls of my feet are hurting from sheer repeated beating upon the ground. :) I'm thinking of getting some squishier insoles for that, but I really like the arch support of the Superfeet. I'm afraid of changing what isn't giving me blisters, but then again my feet throb by the end of the day. I was really dragging the last few miles. I wonder if I'm not eating enough and running low on energy at the end of the day. Normally this is too much, but we need to get to Franklin Friday because it is supposed to storm Saturday. So tired...