Five cities have bid for either or both the 2011 and 2013 world athletics championships, the International Association of Athletics Federations (IAAF) said on Monday.
In a statement the IAAF said Barcelona, Brisbane, Taegu, Gothenburg and Moscow had confirmed they were candidates.
Brisbane, Gothenburg and Moscow are candidates for both championships. Barcelona has applied for the 2013 edition while the South Korean city of Taegu is a candidate for the 2011 championships only.
The hosts for both championships will be announced at a council meeting on March 27 in 2007 after the world cross country championships in Mombasa, Kenya.
This year's world championships will be staged in Osaka, Japan, with the 2009 edition scheduled for Berlin.