BURLEY, Idaho — A Provo man died while swimming in a triathlon Saturday morning.

Donald Morehouse, 60, set out from a dock on the Snake River for the swimming portion of the Spudman Triathlon just before 8 a.m. Witnesses said Morehouse called for help and went under the water shortly after the race started, according to a statement from the Cassia County Sheriff's Office.

A dive team found Morehouse's body roughly 30 minutes later in 10 feet of water. The man was taken to a nearby hospital where he was pronounced dead.

The state medical examiner is still investigating the death.

An autopsy has been scheduled. Morehouse's friends said he was physically fit and had participated in several other races.

"The absolute picture of fitness," said Scott Slaymaker, who partnered with Morehouse for 15 years in owning The Slaymaker Group, an international restaurant franchisee based in Salt Lake City. "I remember him saying, 'I feel better than I ever have, and I hope I can feel even better when I turn 70."'

Morehouse, who had four children and was married to Fairy Morehouse, spent many mornings jogging before work and had set a goal of entering a different physical competition each year, Slaymaker said. He had run the St. George Marathon in Utah several times and ran the New York City Marathon in 2007.