According to Tojiro YAMAGUCHI's critical biography, it is stated that he extended his travel 'from Koshin in the East to Bocho in the west', but its evidence has not been confirmed and the places where Tomoari visited for sure are Hokuetsu including Mt. Hakusan and Mt. Tateyama, Kii Province where his own domain existed, and various other provinces such as Yamato Province, Kawachi Province, and Izumi Province only in Kinai region (provinces surrounding Kyoto and Nara).
山口藤次郎による評伝では、その他にも「東は甲信から西は防長」まで足を伸ばしたと述べられているが、その裏付けは確かではなく、伴存の足跡として確かなのは白山や立山を含む北越、自身の藩国である紀伊国の他は、大和国、河内国、和泉国といった畿内諸国のみである。