Marathon, Greece, September 490 BC. King Darius leads his Persian army in an attack on Greece. When the Persian fleet, carrying massive infantry and cavalry, arrived on Greek soil at Marathon Bay, the Greeks were outnumbered 4:1. But in an heroic effort,the Athenian hoplite warriors were victorious in a fight against both greater numbers and time. Yet while they fought on land, Persian ships were sailing round to sack the undefended city. Athens had to be warned--thus Phidippides' 26-mile run.