harder triathlon

How Long Is The Run In A Triathlon? Swim 3.9 km (2.4 miles) 1-2 hours Bike 180 km (112 miles) 5-9 hours Run 42 km (26.2 miles)3.5-6 hours How long is each in a triathlon? The different triathlon distances are: Common triathlon: A swim of 0.93 miles (1.5 kilometers), a bicycle route of 24.8 miles