The time line shows Athens and Sparta.

Timeline of Athens and Sparta starting at 1000 B C E. City states emerged in Greece in 750 B C E. The invasion of Xerxes failed in 480 B C E. Darius the first lost the Battle of Marathon in 490 B C E.
The Persian wars came to an end about forty years after the first failed invasion of Greece led by Darius I, which means they ended around

530 BCE.
520 BCE.
450 BCE.
440 BCE.