Evolutionary tracks of rotating models with initial masses of 20 M_⊙ and 25 M_⊙ at solar metallicity (Z = 0.014), shown in the HR diagram and calculated in Ekström et al. (2012). The initial rotation rate is 40% of the critical velocity for break-up. Blue filled squares indicate the pre-SN stage, and representative evolutionary phases are indicated. Temperatures refer to those at the last envelope layer.