The Soviet blockade of West Berlin (the Berlin Blockade) lasted just under 11 months , from 24 June 1948 to 12 May 1949.

In days, that’s usually given as about 320–323 days , depending on whether sources count the start and end dates inclusively.

In short: when people ask “how long did the Soviet blockade last?”, historians generally answer about 11 months (June 1948 – May 1949).

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