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The aim of this study was to analyse the start and the skiing technique in Ski Cross, and relate them to the performance. The project consisted of two parts: an indoor test was conducted to relate the impulse applied by the skiers on the start handles to their velocity at handle release. Further, an outdoor test was conducted to study the skiers’ kinematics over the first features of a Ski Cross run, and relate it to completion time of the first section (~30 m). Five athletes from the Swedish National Team were tested on several occasions using an instrumented start gate, an inertial motion unit (IMU) based suit and a differential global navigation satellite system (GNSS). Results showed marked differences in starting technique leading to distinct velocities after handle release. These differences did not immediately relate to time used to cover the first feature (Wu-Tang) in the run. The data demonstrate that the generation of centre of mass velocity during the start is not the main criterion for a successful performance in the initial section of a ski cross run.