100M.

He was born with speed. It was his only asset, the ability to run swiftly. This talent provided him "a place at school" and "a bridge between friends". That was all the boy possessed. Then, he encountered another boy who ran to escape the struggles of life. While he was not fast in any respect, he was filled with passion. This passion was contagious, and he slowly started to experience the same thrill. However, this marked the onset of the "abnormality".