There are 7 major events and 109 minor events in the Beijing Winter Olympics. When you talk about these events, what is your first impression: cold. Athletes need to use these 4 years of hard work to realize their glory and dreams in an average temperature of minus 20 degrees Celsius. And in these 109 small events, more than half of the racing events will make you feel tired, that is, tired. In the Winter Olympics, there are three such events, which can be called "marathons" in the Winter Olympics. These competitions are cross-country skiing, biathlon and speed skating.