Although the sudden epidemic in 2020 has had a serious impact on the development of Chinese marathon，the development of Chinese marathon has not completely stalled. The essence of marathon events is to carry out project management. Therefore，the organizers，operators，sponsors，media，participants，and spectators，as the stakeholders of the marathon events，have an impact on the impact of the epidemic，is also seeking self-help in different ways. During the peak period of the epidemic，a large number of events are cancelled or postponed，mainly for online teaching and science popularization. During the period of mitigation of the epidemic，they actively seek out ways，explore online development paths，and integrates with localities. Features，exploring new ways to play online marathon. By the beginning of October，the epidemic entered a stable period，and began to try the combination of online and offline forms to gradually expand the scale of the event.