This post talks about an Islander who does Ultraman events. He has recently traveled to Hawaii to compete in Ultraman Hawaii.
I have heard of a lot of events, but I had never heard of an Ultraman. A 2-day event, it seems to be roughly an elongated Ironman:
Day One: swim 10 km, bike 145 km
Day Two: bike 275 km, run 84 km (aka 2 marathons)
There is extreme, and then there is ultra. That is unbelievable.
I've checked the race results and it looks like Paul Dalton made it! Bravo!