The Satsuma Kaidō (薩摩街道) was a road across Kyūshū from Chikushino to Kagoshima, used by daimyōs for the sankin-kōtai, and also by the lord of the Satsuma han on whom a similar obligation of visiting the shōgun was imposed.
One such sub-route was the Ōkuchisuji (大口筋), which connected Satsuma Province with Ōkuchi.
The terminus for the Ōkuchisuji is in Ōkuchi in modern Isa.
Another sub-route was the Takaokasuji (高岡筋) connected Kajiki (modern-day Aira) with the Sadowara Castle in Sadowara (modern-day Miyazaki), Miyazaki Prefecture.
The Satsuma Kaidō's 23 post stations are listed below with their modern-day municipalities indicated beside them.