I hate cold! I hate riding in the cold, I hate walking in the cold, and yes, I do hate running in the cold. Yesterday it was 30 F. I'm sure some will say: "What is he talking about? 30 degrees is warm.", but to me anything below 50 is cold, and anything below 32 is very cold. It's not that I am physically cold while running, not in the classic sense. I do dress up, and my internal heat production works. But my skin is cold (while I sweat), my nose is dripping, my ears hurt (or just uncomfortable, if I pull my cap on them), and slight changes of wind direction make me warm and cold all the time. I will choose 100 F any time over 32 F.