Abstract: This cross-country ski is more particularly intended for the technique termed "skating".Its bearing length L.sub.P, corresponding to the developed length of the sole separating the two respective front (5) and rear (6) contact lines of the ski is at most equal to 1,430 mm.The variation in the deflexion C at the support face under a load of 40 kilograms exerted at the midpoint of said bearing length L.sub.P, when the ski is placed on two supports (7,8) which are separated from each other by a length L defined as being equal to the ratio of the bearing length L.sub.P to a constant coefficient equal to 2.78, the supports (7,8) being centerd with respect to the mid-point of the bearing length. The deflection is at most equal to two millimeters, this variation in the deflexion being defined with respect to the deflexion of the ski in the absence of load, itself measured with respect to the plane P passing through the two support points (7,8).