It took two years as their first expedition was aborted after a sea disaster. They arrived and first captured Eretria which was one of their targets; Athens was the second and they moved to land at the Plain of Marathon 26 miles north of Athens.
A decade.
At the battle of Marathon 490 BCE the Athenians defeated the Persians.
They lost.
Marathon was fought to keep the Persians from invading Athens.
disppointed
The Athenians and their Platian allies defeated the Persians punitive expedition sent against them in a land battle on the Plain of Marathon.
Marathon
marathon?
At Marathon 490 BCE.
About 25,000.
Datis.
The Persians .