<human>:  What's the difference between a triathlon and an iron man?
<bot>: The main difference between a triathlon and an Ironman is the distances that are involved in the events. A triathlon consists of swimming, cycling, and running a total distance of approximately 140 km (or just over 87 miles) in that order. An Ironman consists of swimming, cycling and running a total distance of approximately 226 km (or just over 140 miles) in that order.