The dates of the 2015 provisional calendar of European Superstock 600 championship. DATE COUNTRY CIRCUIT 12 April Spain MotorLand Aragón* 19 April The Netherlands TT Assen 10 May Italy Autodromo Internazionale Enzo e Dino Ferrari di Imola 07 June Portugal Autódromo Internacional do Algarve** 21 June Italy Misano World Circuit Marco Simoncelli 20 September Spain Circuito de Jerez 04 October France Circuit de Nevers Magny-Cours *STK600 double race ** STC = Subject to contract conditions