Mark Winzenried (born October 13, 1949) is an American former middle-distance runner. The 1971 NCAA champion at 880 yards, Winzenried narrowly missed qualifying for the American Olympic team in 1968 and was favored to qualify in 1972 until an injured Achilles tendon spoiled his chances. He held the indoor world best at the unusual distance of 1000 yards from 1972 to 1981, and still holds the world junior best in another non-standard event, 600 meters.