This year’s championships will be the 16th in the event’s 34-year history. The first IAAF World Championships was hosted in Helsinki in 1983. The last edition of the Championships held in Beijing, China, in August, 2015, saw 1931 athletes participate from a record 207 national federations. Kenya topped the medal table for the first time in its history, winning 16 medals of which seven were gold. USA have topped the medal table on 10 occasions.