Menkov set a personal best of 8.16 metres in Kemerovo in June 2009. He won the gold medal at the 2009 European Junior Championships, and competed at the 2009 World Championships without qualifying for the final. At his season opener in January 2011, the Siberian regional championships, he improved his personal best by one centimetre to 8.17 metres. The highlight of this season was a 6th place at the 2011 World Championships. At the 2012 Olympic Games, he placed 11th.