1, the whole marathon is about 42. 195 km. The project is divided into three types: full marathon, half marathon and quarter marathon. Marathon originated from the ancient Greek-Persian war. The Greek commander sent soldier Ferdinand Pitts back to his hometown to report the victory. Ferdinand Pitts ran back to Athens in one breath. When he told the people the news of victory, he fell to the ground and died.

In order to commemorate him, people regard the marathon as a fixed event, which has continued to this day.