The whole distance is 140.6 miles. Another half Marathon is called iron man 70.3
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A 4 km swim, 180km bike and 40km run where athletes burn with 10000 calories 5 times as much as average humans. Anyone achieve doing it within a 17 hour timeout get called iron men but winners get through within 8 hours. It starts 7AM at Kailua Kona Bay.