As a sport that both amateurs and professionals can participate in at the same time，marathon has a good mass base. Domestic marathon sponsorship is generally divided into four levels，from low to high：Official designated supplier，official sponsor，official partner and named sponsor. Affected by the epidemic，some marathon events in 2020 had to be cancelled or postponed，but the large-scale and influential marathon events held at the end of 2020 still received good support. The main market body of Marathon industry is growing，and a number of enterprises with development strength and growth potential are emerging. Form an industrial chain in the aspects of event operation，marathon club，sports app，outdoor sports products and other industries or services. Marathon sports consumption continues to increase，effectively promoting the growth of sports consumption. Marathon combines the characteristics of Humanities and natural landscape to form a variety of urban characteristic events. In the context of the epidemic situation in 2020，marathon events can still attract the participation of the majority of sponsors，which is enough to prove that marathon events can bring huge sponsorship value and economic benefits to the sponsors. Development trend of Marathon industry and sponsorship Market：the upstream and downstream industry chain of Marathon industry is gradually formed and improved. In combination with the characteristics of Humanities and natural landscape，various sports events are developed according to local conditions. All parties involved in the event jointly create a brand event with popularity and differentiation characteristics. Marathon and technology，tourism，health，leisure，culture and other industries are integrated to form a coordinated and orderly development of online and offline marathon，as well as multi industry integration and aggregation to promote each other. The combination of sponsors and events is gradually deepening. Domestic marathon sponsors also have a trend of localization. At the same time，for the new marathon，its sponsorship effect has good potential.