<page_title> 1961 Grand Prix motorcycle racing season </page_title> <section_title> 1961 Grand Prix season calendar </section_title> <table> <cell> 125cc winner <row_header> Round </row_header> <row_header> Date </row_header> <row_header> Grand Prix </row_header> <row_header> Circuit </row_header> </cell> <cell> 250cc winner <row_header> Round </row_header> <row_header> Date </row_header> <row_header> Grand Prix </row_header> <row_header> Circuit </row_header> <row_header> 125cc winner </row_header> </cell> <cell> 350cc winner <row_header> Round </row_header> <row_header> Date </row_header> <row_header> Grand Prix </row_header> <row_header> Circuit </row_header> <row_header> 125cc winner </row_header> <row_header> 250cc winner </row_header> </cell> <cell> 500cc winner <row_header> Round </row_header> <row_header> Date </row_header> <row_header> Grand Prix </row_header> <row_header> Circuit </row_header> <row_header> 125cc winner </row_header> <row_header> 250cc winner </row_header> <row_header> 350cc winner </row_header> </cell> <cell> Sidecars 500cc winner <row_header> Round </row_header> <row_header> Date </row_header> <row_header> Grand Prix </row_header> <row_header> Circuit </row_header> <row_header> 125cc winner </row_header> <row_header> 250cc winner </row_header> <row_header> 350cc winner </row_header> <row_header> 500cc winner </row_header> </cell> <cell> 11 <col_header> Round </col_header> <col_header> 1 </col_header> <col_header> 2 </col_header> <col_header> 3 </col_header> <col_header> 4 </col_header> <col_header> 5 </col_header> <col_header> 6 </col_header> <col_header> 7 </col_header> <col_header> 8 </col_header> <col_header> 9 </col_header> <col_header> 10 </col_header> </cell> </table>
The 1961 Grand Prix motorcycle racing season consisted of eleven Grand Prix races in five classes, which are 500cc, 350cc, 250cc, 125cc and Sidecars 500cc.