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Athens and Sparta agree a Thirty Years' Peace

446/445 BCE, Athens and Sparta. An event.

Where and when

446/445 BCEAthens and Sparta

about 2,471 years ago

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, Athens and Sparta

Athens and Sparta make a truce meant to last thirty years, and Athens gives up the places it held in the Peloponnese.

Not long after their return from Euboea, they made a truce with the Lacedaemonians and their allies for thirty years, giving up the posts which they occupied in Peloponnese, Nisaea Pegae, Troezen, and Achaia.

Thucydides 1.115.1Translated by Richard Crawley (1874)Read the full passage (Thucydides 1.115.1, opens scaife.perseus.org)

Background: Thirty Years' Peace, Wikipedia (opens en.wikipedia.org)

Why it matters

The treaty ended the fighting known as the First Peloponnesian War, but it lasted only fifteen years and ended when Sparta declared war on Athens.

Based on Wikipedia: Thirty Years' Peace

The treaty brought an end to the conflict commonly known as the First Peloponnesian War, which had been raging since c. 460 BC.

The Thirty Years' Peace, however, lasted only fifteen years and ended after the Spartans had declared war on the Athenians.

Wikipedia, Thirty Years' Peace (opens en.wikipedia.org), as of 2025-11-15. Text CC BY-SA 4.0. Our line is checked against these sentences only.

Related moments

In time order, with this one in its place. Each says why it is here.

  1. 447 BCE1 year earlier Work begins on the Parthenon Also in Athens
  2. set in c. 447 BCE1 year earlier Pericles counsels waiting for Time Also in Athens
  3. 446/445 BCEThis momentAthens and Sparta agree a Thirty Years' Peace
  4. c. 441 BCEabout 5 years later Sophocles' Chorus on the wonder of man Also in Athens
  5. set in 432 BCE14 years later Pericles urges Athens to guard the sea Also about war and empire
  6. 431 BCE, written later15 years later Thucydides opens his history of the war Also about war and empire

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