usain bolt 2010

usain bolt is not ready to run 400 metres , he will run in daeou the 19 th mai his first race for this season , he prepares for 100 and 200 metres he finds 400 metres very hard so he will focus on 100 and 200 metres he will run in kingston, 1 mai shangai 23 may ,new york 12 june ,paris 16 july and brussels 27 august