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How often were the ancient Olympic Games held at Olympia?

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Map of southeastern Europe highlighting Greece and marking the location of Olympia with a red star, indicating its status as a World Heritage Site. Olympia is shown in the western part of the Peloponnese peninsula, surrounded by neighboring countries and nearby seas including the Ionian, Aegean, and Mediterranean. — Olympia Olympia was declared a UNESCO World Heritage site in 1989.

The ancient Olympic Games were held every four years at the sacred site of Olympia, Greece.12

This four-year interval was so significant in ancient Greek history that historians eventually used it as a method for measuring time, referring to the period between the Games as an Olympiad. The tradition of holding the Games on this quadrennial cycle began in 776 BCE and continued for 1,168 years until they were abolished in 393 CE by Emperor Theodosius I. The timing allowed participants from various Greek city-states sufficient time to prepare for the religious festival and travel to the site.132