The Isthmian Games were a music and athletic contest. The Isthmian Games happened in ancient Greece. The Games were played honour of the sea god Poseidon. They were played in the spring of the second and fourth years of each Olympiad. They were played at the holy place of Poseidon on the Isthmus of Corinth. The Isthmian Games were played until the 4th century c.e. Both men and women competed in the Isthmian Games.