How do we know about the olympic games which happened 2000 years ago?

Our knowledge of the ancient Olympic Games, which began in 776 BCE, comes from various historical sources, including written accounts by ancient historians like Pausanias and Strabo, along with references in literature by poets such as Pindar. Archaeological discoveries at Olympia, including the ruins of the stadium, temples, and artifacts, provide physical evidence of the games and their significance. Inscriptions detailing winners and events also contribute to our understanding of this ancient tradition. Together, these sources paint a comprehensive picture of the Olympic Games' cultural and historical context.