FIM Superbike & Supersport World Championships- FIM Superstock Cup 2011 updated Calendars <pre> 

Dates                   Grand Prix             Circuit                  Superbike  Supersport  Superstock
February 27             Australia              Phillip Island               X          X
March 27                Europe                 Donington                    X          X
April 17                The Netherlands        Assen                        X          X           X
May 8                   Italy                  Monza                        X          X           X
May 30 (Monday)         United States          Miller Motorsport Park       X
June 12                 San Marino             Misano                       X          X           X
June 19                 Spain                  Motorland Aragon             X          X           X
July 10                 Czech Republic         Brno                         X          X           X
July 31                 Great Britain          Silverstone                  X          X           X
September 4             Germany                Nurburgring                  X          X           X
September 25            Italy                  Imola                        X          X           X
October 2               France                 Magny-Cours                  X          X           X
October 16              Portugal               Portimao                     X          X           X

-source: wsbk