<page_title> 1977 Grand Prix motorcycle racing season </page_title> <section_title> 1977 Grand Prix season calendar </section_title> <table> <cell> Italy Pier Paolo Bianchi <col_header> 125cc winner </col_header> </cell> <cell> Italy Mario Lega <col_header> 250cc winner </col_header> </cell> </table>
Pier Paolo Bianchi successfully defended his 125cc title while Mario Lega captured the 250cc championship in Italy.