With the pain in the right sole gone, I felt ready to hit the road without shoes. Today I ran my favorite 6 K shuttle course with many hills of various degrees of steepness. I ran the first half in 15:54.45, and the second one in 14:47.71. Nothing feels better than running barefoot. Of course there is some discomfort when the road surface is rough, but once your sole has become tough enough, it's all bearable, and the joy of feeling the wind directly on your feet, and that of making direct contact with the ground far exceed such a trivial discomfort. Meanwhile, my running form continues to improve, and so does running economy.