Why are marathons so popular now?

Why are all places keen on hosting events? This is because the threshold for holding a marathon is low, as long as there is a road, the road surface can even be free from any special requirements. Foreign players need accommodation and catering, which is an opportunity for the city to promote the growth of tourism. Therefore, local governments are keen on holding competitions and sponsorship, which is a business that can make a steady profit. The low threshold leads to the poor level of many competitions, such as not closing roads (Songshan Shaolin Marathon, Tengzhou Weishan Lake Marathon), not providing enough time (too much, so I won't mention them one by one), insufficient material supply (too much) and no medical services (too much). It seems that everyone is rushing to hold activities, but in fact, not many people are worth participating in. Starting from this year, the National Land Management Center canceled the approval of marathon (China Athletics Association: completely canceled the approval of marathon). There is no limit, everyone can do it. As for the level of hosting, friends who often run know it. The country has no restrictions, and ordinary people are curious, which leads to marathon fever. Most people only participate in short-distance events. In the eyes of runners, marathons have always been like this. There are many events, but those are the ones that can run.