As Tai said it is hot on the run. It isn't an easy bike course. This part of the the IM Hawaii course has more short, steep rollers then any other part of the course. The last seven miles into Hawi are notorious for the headwind and it is a steady climb. The good news is when you turn around you are usually going 30+ MPH for a while. Probably one of the worst parts of the course is the run from the beach up to where the bikes are and then the hill to get out of Hapuna back to the Queen K. We did the ride a couple of days ago and the wind was blowing so hard we barely made it up the hill.
If the wind is blowing which it almost alwyas is on this part of the Island all bets are off on the bike.
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