Thomas Grinovich does. A fellow participant in the race, he was trying to cross Highway 72 with McCoy. One moment, he said, McCoy was close to his left shoulder, midway throughout the dark, wide road. The next, a headlight, the holler of an engine, then a dreadful, pounding thud.”When I get the flashbacks,” he said, “that noise is what I hear.”On June 18, McCoy and Grinovich were amongst the 66 runners who triggered from West Memphis, Ark., for the inaugural running of the Heart of the South Road Race, the brainchild of Gary Cantrell, known in the ultrarunning world as Lazarus Lake.Since the mid-1980s, Cantrell, a bearded, Camel-smoking ultrarunner from Tennessee, has been creating some of the worlds hardest occasions. His competitions are more journeys than races, ones lots of runners never ever end up. In the past three years, just 15 individuals have completed Cantrells Barkley Marathons, a 100-mile endeavor over unmarked terrain in the Cumberland Mountains in eastern Tennessee.As ultrarunning– any race longer than a 26.2-mile marathon– has actually become more popular, the sports hard-core specialists have actually pressed the limits of the sport and human endurance. Races that extend more than 200 miles over numerous days are no longer uncommon.Catastrophic injuries and accidents with cars are uncommon in ultrarunning, though the sensation of dodging death– from direct exposure, fatigue, dehydration or even an encounter with a bear, a mountain lion, a rattle snake or speeding traffic– can be a part of the appeal. However McCoys mishap, crossing a highway after 5 endless days of running, raises the question of whether this race was a test of rigor or recklessness.