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From Wikipedia, the free encyclopedia. In its 29 years of operation, there were 14 acknowledged attempts to escape from Alcatraz prison involving 34 inmates (two, Joseph Cretzer and Sam Shockley, tried twice). Officially, every escape attempt failed, and most participants were either killed or quickly re-captured.
The facility is perhaps most famous for its forbidding location, isolated on a rocky island in the middle of San Francisco Bay. In the three decades that Alcatraz was in operation, there were only 14 escape attempts involving 36 men, according to the FBI.