Articles on Running (5)

I'd like to have 5 articles on running (specific keywords and articles titles per article to be supplied at a later stage). I'd like to have original content (no spun or plagiarism accepted) and an english speaking writer. Articles should be SEO friendly and content relevant for readers. Keywords need to be placed once in the headline, once in the first sentence and around 2-4 times sprinkled throughout the article. Each articles should be 500+ words.