I realize I'm soft and everything I'm about to post goes against everything Letsrun stands for, but here it goes anyway.
I'm a middle-aged guy who doesn't perform well in warmer weather, especially at the marathon distance. I'm looking for something in the late November-February time frame that regularly has race temps in the 40s or below. Flat to rolling hills would be preferable, but I know I'm pushing my luck with that request.