1. Inconvenient transportation: Although Leshan enjoys an excellent geographical location, it may bring inconvenience to the contestants and spectators due to inconvenient transportation.
2. Lack of resources: There are relatively few sports events in Leshan, and there is a lack of rich resources to support them.
3. Low popularity: Compared with other cities, Leshan has a relatively low popularity, which may affect the influence and participation of marathon events.