As Kurayami-goe Nara Kaido, the shortest route between the two places, had a steep mountain path, Tatsuta-goe Nara Kaido was found useful as a flat route having relatively gentle ups and downs.
最短ルートである暗越奈良街道が急峻な山越えであるため、比較的坂の緩い平坦路として重宝された。