27 years.
431 - 404 BCE .
431-404 BCE
They fought several times, and were war allies on a number of occasions. The principal one was the Peloponnesian War 431-404 BCE, Sparta and its allies versus Athens and its empire.
The Peloponnesian War lasted 27 years (431-404 BC).
The Spartans and Athens went to war in 431 B.C. and the war ended in 404 B.C.
431 - 404 BCE .
From 431 to 404 BCE.
431 to 404 BCE.
431-404 BCE.
431 BCE to 404 BCE.
431-404 BCE
The war between Sparta and its allies and Athens and its empire was 431-404 BCE.
The Peloponnesian War was fought from 431 to 404 BC .
431-404 = 27
Thucydides: 431-411 BCE - The Peloponnesian War.Xenophon: 411-404 BCE - Hellenica.
The Peloponnesian War was fought during the years 431-404 BCE.
It went on for 27 years, Athens lost its empire.