How long is an Ironman triathlon?
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An Ironman triathlon is 140.6 miles long. This is considered an endurance event, and frequently takes competitors over 10 hours to complete. The triathlon consists of 3 events: swimming, biking, and running. The swim portion is 2.4 miles long; the bike segment is 112 miles long; and the run segment is 26.2 miles long.
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