How far do arctic terns migrate and where they go in winter?

Arctic terns hold the record for the longest migration of any animal, traveling up to 110,000 kilometers (70,000 miles) and back each year between their Arctic breeding grounds and their Antarctic wintering grounds.

When the summer breeding season ends in the Arctic, adult arctic terns set off on their long journey starting around July through November, and fly south over Europe and Africa past Antarctica to the coasts of the southern oceans or to the pack ice around Antarctica where there is no land.

Then they fly north again when it's time to breed once again in the Arctic which starts around March to June.