Police have identified the body found floating in the Tennessee River under the Olgiati Bridge on Sunday as 34-year-old Steven Paul Calhoon.
Police are still awaiting the cause of death from the medical examiner.
Calhoon's body was found during Sunday's Ironman triathlon, just downstream from the spot where thousands of swimmers finished a 2.4 mile swim.
Authorities say he was not involved with the Ironman events.
Stay with the Times Free Press for more details as they develop.