The article considers the features of planning of the loading within the basic special and preparatory mesocycle of skiers-racers on the basis of hemodynamic indicators of athletes of different age and level of physical fitness. Age features of hemodynamics of the athletes who are engaged in cross-country skiing, their functional reactions to active ortoclinostatic test and applied interpretation of results of research are shown. Logical approaches to planning of the training process taking into account the condition of cardiovascular system are described. Changes of indicators of cardiohaemodynamics after correction of planning of the training mesocycle are investigated.