He set a personal best jump of 8.16 metres in June 2009 in Kemerovo. He won the gold medal at the 2009 European Junior Championships, and competed at the 2009 World Championships without reaching the final. He improved his best by a centimetre to 8.17 m in his 2011 season opener at the Siberian regional championships in January.
Menkov won gold at the 2013 World Championships with a personal best of 8.56 metres. He was 6th both at the 2015 World Championships and at the 2011 World Championships.