Tango Discovery No. 3 is operated only between Kyoto Station and Fukuchiyama Station/Higashi-Maizuru Station; it doesn't run on the lines of Kitakinki Tango Railway.
3号は京都～福知山・東舞鶴間のみの運転で北近畿タンゴ鉄道線内に乗り入れない。