The Sanyo Main Line is a major railway line in Japan, operated by the West Japan Railway Company (JR West). It runs along the southern coast of Honshu, connecting the cities of Osaka and Hakata. The line spans approximately 570 kilometers and serves as a vital transportation route for both passengers and freight. Opened in stages between 1889 and 1996, the Sanyo Main Line features various train services, including local, rapid, and express trains. It passes through several key regions, including Okayama, Hiroshima, and Kagawa, providing access to important cultural and economic centers along the way.