I'm up to 10 miles and will be moving to 12 soon, but I still don't carry anything with me. For the most part, I have relied on a route with water fountains. But I need to order some type of hydration belt or handheld water bottle. I have my SPIbelt, which comes in handy and carries way more than you'd think.
Cold Weather workouts
I just ordered some moisture wicking long sleeve shirts. FYI, go here and NOT here. It's the worse customer service I've ever experienced in life and I may never step foot in that store or go to their web site again.