It was in the Plains of Marathon where the Battle of Marathon took place, around 490 BCE. There was around 90,000 Persians, led by Datis. There only around 10,000 to 20,000 Greek soldiers, led by Miltiades.
Though the Greeks were vastly out-numbered, they fought with better weapons, and stronger armour. The Persians used arrows to attack the Greek soldiers, but it an ineffective tactic, since the Greek hoplites were amoured with bronze.
I want you to run to Athens and tell them that we were victorious!
The Greeks surrounded the Persian soldiers, which was a strategic move for them.
The Greek soldiers kept a tight formation, and around 6,400 Persian lives were lost, but only 192 Greeks were lost to the battle. The Greeks were victorious. Meanwhile, the Persian fleet retreated back to the Asia Minor.
After the battle, Miltiades took the fastest runner in the army and told him to run back to Athens to tell them they have won.
He ran 26 miles, all the way back the Athens and told them they had emerged victorious. The Athenians cheered with joy knowing that they had defeated the Persians. The soldier's journey to Athens inspired marathons, today all marathons are 26 miles. The End