Despite carving skis being introduced into alpine ski racing years ago, and the general opinion that they make smoother turns, no studies have yet investigated this topic. The aims were to investigate whether gate setup and turn radii influence energy dissipation. 3D kinematical measurements were performed for WC slalom ski racing over two runs on the same slope with two different gate setups: 1) open gates (OG) and 2) open gate setup with a delayed gate (DG). The results show differences between the different gate setups regarding: 1) the absolute centre of gravity’s (CG) velocity, 2) absolute acceleration, 3) CG and arithmetic mean of the skis’ turn radii, 4) ground reaction forces and 5) energy dissipation during skiing (all p<.05). The latter was also correlated to the turn radii on both courses (OG: r=.364 and DG: r=.214, both p<.001). In summary, compared to plain open gates an additional delayed gate prolonged the turn radii; the turn radii are related to energy dissipation in slalom skiing.