Every four years. This period of time was called an "olympiad".
Every 4 years
both are/were held every 4 years, or as the ancient Greeks called it, every olympiad
every year
The Romans never held the Olympics; the Olympics were an Ancient Greek game.
Every four years at the Temple of Zeus at Olympia in Elis.
They do it every 4 years.
the Olympics were originally held every four years when the Greeks created it , ( just as it is now )
Only at Olympia.
Every twelve years
it was held in ancient Greece in Olympus
every 4 years just like now.
they are around us every day... wrestling is a game that was held in greek Olympics
the first ancient Olympics where head in grease