Modern-Day Tests of Hercules

The Ironman Triathlon requires its participants to swim 2.4 miles, ride a bike 112 miles and run a full marathon of 26.2 miles. At the championship in Hawaii, the swim is in the open ocean, the bike ride winds through windswept lava flats, and the marathon course is hot and grueling. Participants must complete a qualifying race to be eligible for the championship in Hawaii, and the final race routinely has fewer than 50 entries of either gender. Both Dave Scott and Mark Allen have won the event six times each, and Scott nearly won his seventh at the age of 40 in 1994.