The extreme environments of high altitude and cold, and movement complexity makes mountain ski racing a difficult sport and athletes involves in this activity as physiologically demanding. Cardiopulmonary exercise test (CPET) is a procedure that provide information for diagnostic and prognostic purposes that assess the individual’s capacity for dynamic exercise and being increasingly used in broad spectrum of sportive and clinical applications in order to objectively determine the functional capacity. The aim of this study was to investigate sportive capacity-related physiological parameters [(maximal oxygen consumption: VO2max, respiratory Exchange ratio (RER), heart rate (HR), heart rate reserve (HRR) and anaerobic threshold)] of elite mountain skiers using CPET. A total of 15 elite mountain skiers (age of 16-21 years, body mass index: 21.2±2.9 kg/m2) licensed by Turkish Mountaineering Federation was involved and their physiological parameters reflecting sportive capacity was assessed. The elite mountain skiers performed an incremental (5 Watt/20 sec) CPET, pedaling at 60 rpm, up to their maximum and VO2max), RER, HR, HRR, spirometric parameters (FVC, FEV1, MEF) and anaerobic threshold levels determined by the software of the cardiopulmonary exercise testing system (equipped with 12 lead ECG gas analyzer and ergospirometry). The results regarding VO2max of the cohort was (57.2±10.9 ml/kg/min), slightly over than % predicted value for their age, gender, and weight (128±20% of predicted). VO2 at anaerobic threshold (V slope) was 41±11 ml/kg/min. The mean maximal pulmonary ventilation was 121.9±28 L, (109±16 % predicted value for their age, gender, and weight). They also had a large vital capacity. The mean highest power for the group was calculated to be 230±56 Watts (100±21 % of their predicted values). They achieved 97±16 beats/min of their predicted heart rate at exhaustion. By measuring physiological parameters of elite mountain skier team of the Turkish team, for the first time, and found that they have a relatively good level of physiological capacity as reflected by VO2max and. Their capacities are compatible with the requirements of this extreme sport and the values are comparable with published relevant data for international athletes from other countries, despite their relative short sport and biological age.