Competitor dies in swim leg of Boulder Ironman triathlon

A general view of competitors swimming in the Boulder Reservoir during the IRONMAN Boulder on June 10, 2018 in Boulder, Colorado. Donald Miralle/Getty Images for IRONMAN/AFP

BOULDER, Colo. — An athlete died a day after he was pulled from the water during the Boulder Ironman 70.3 triathlon in Colorado. It was the third death in four years of Ironman competitions in Boulder.

A witness, physician Donald Cain from Wisconsin, told the Daily Camera in Boulder that a man was pulled from the water on Saturday, and Ironman officials say the athlete died Sunday. The Boulder County coroner identified the man as 50-year-old Scott Michaelis, of Wichita, Kansas.

A 70.3 triathlon, or half Ironman, involves swimming 1.2 miles (1.9 kilometers), biking 56 miles (90 kilometers) and running 13.1 miles (21 kilometers).

Thirty-four-year-old Michelle Walters, of McCook, Nebraska, died after being struck by a vehicle during the 2016 race, and 40-year-old Brian Godlove of Fairfax, Virginia, died three days after a 2015 race from dehydration and muscle tissue breakdown.