Among the trains having no reserved seats, those running between Okayama Station and Shimonoseki Station run the longest distance (two outbound trains and three inbound trains; they become the Rapid Service 'City Liner' in the Hiroshima City Network section, and a train number changes at Tokuyama Station; moreover, an inbound train in the evening becomes 'Commuter Liner (train)' from Okayama Station (running distance: 384.7 km).
全車自由席の列車だと山陽本線の岡山駅～下関駅間を走る列車（下り2本・上り3本、広島シティネットワーク区間では快速「シティライナー(列車)」となり、徳山駅で列車番号が変わる。夕方の上り1本はさらに岡山駅から通勤ライナー(列車)となる。運行距離は384.7km）となる。