The assumed location for the western border, Nishikyogoku-oji Avenue draws a line north-south between the following two stations - Hanazono Station of the JR West Sanin main line (Kyoto pref.) and Nishi-Kyogoku Station of the Hankyu Kyoto main line.
西限の西京極大路の推定地は西日本旅客鉄道山陰本線花園駅(京都府)や阪急電鉄阪急京都本線西京極駅を南北に結んだラインである。