Here is Juan at the 20 mile mark of the Chicago marathon, he is the one with the blue gloves. Juan is wondering where the wall is? Have to tell you all that there in NO wall in a marathon that you hit, I have yet to see one in a 100 mile race!! To hit the wall means you have gone out to fast or you have not followed a sound plan as far as nutrition. Juan kicked it in, passed tons of people and his last mile was the fastest of 26!! Juan you rock!!!!