Be careful out there guys!

I've been at races where I didn't seem to sweat much despite the heat. But if the humidity is low enough, your sweat evaporates before it soaks your clothes. Drink often because if you get thirsty, it's too late, you're already dehydrating! I always brought a huge cooler for food and drinks, including up to a case of water, to save money. But the cooler kept plenty of water bottles cold as I rotated them through it on race days.