The Olympic torch relay is a ceremonial event that takes place before the Olympic Games. It involves carrying a lit torch from the site of the ancient Olympic Games in Greece to the host city of the upcoming games. The relay symbolizes peace, unity, and friendship among nations. During the relay, the torch is passed between various runners, often including notable athletes and local heroes. The journey culminates in the lighting of the Olympic cauldron at the opening ceremony, marking the official start of the games. This tradition has been a part of the Olympic Games since 1936.