The city of Ostrava, in the far east of the Czech Republic, is the host venue and is on course to welcome 175 IAAF Member Federations who have indicated their intention to compete. The championships are open only to athletes aged 15, 16 or 17 years of age on 31 December 2007 (e.g. 2007: born in 1990, 1991 or 1992).
The previous edition in Marrakesh, Morocco in 2005 saw the participation of 177 Member Federations, which remains the largest total of nations to have competed in the short history of the IAAF World Youth Championships.
However, while 1250 athletes travelled to Morocco two years ago, preliminary figures for Ostrava show that the 175 nations intend to field a total of 1477 athletes for this year’s championships. If those numbers are matched when the final entries are received - 25 June deadline - then that will be a record for the IAAF World Youth Championships which first took place in 1999 in Bydgoszcz, Poland. The previous largest number of athletes to have competed was the 1262 who took part in the second edition in Debrecen, Hungary in 2001.