That's really BAD news on a hot day. Because on very hot humid days, my body starts accumulating heat and even at a nice steady modest jogging pace, the heart rate continues to climb up beyond what I can maintain. So I bonk and have to walk.
Swim (2007) 48:50
Bike (2007) 3:24:55
Run (2006) 2:42:02
However, the Race Gods may have other plans. Intellicast is calling for a high of 87 degrees and partly cloudy, the same as does weather.com. Which, combined with ultra-high humidity (surrounded by open water on three sides and an ocean not too far away in the fourth direction), baking sun, radiant asphalt, and no shade -- spells a melt-down for many people (such as myself) on the run course.
Accuweather, however, is calling for 84 degrees and mostly cloudy. I sure hope they're right. *fingers crossed*
In any event, you can be sure I'll be keeping a close eye on my heart rate meter any time I race in hot, humid, tough conditions. I have no intention to push myself into heat stroke if I can help it - not even for a sub-7. I'm doing this for fun and health, and have no desire to wind up in an ambulance (the antithesis of health!).
Update: Uh oh, now the forecasts are a couple of degrees higher. MUST. STOP. LOOKING.