<page_title> Sergio Chiesa </page_title> <section_title> International competitions </section_title> <table> <cell> 2003 <col_header> Year </col_header> </cell> <cell> World Half Marathon Championships <col_header> Competition </col_header> </cell> <cell> 35th <col_header> Position </col_header> </cell> </table>
Sergio Chiesa competed at the 2003 World Half Marathon Championships, placing 35th.