A riding buddy that did the Arrowhead 135 back in February uses a coozie and double-walled bottle. He needs to stop to get a drink but the water never freezes. However, like [MENTION=434743]DaveQ24[/MENTION] said, in the suburban life, there's a Starbucks or two on every corner.

Last winter, I did a 25 mile ride with temps around -10F. I ended up stopping at a coffee shop to take a leak (it's damned hard to pee outside with the layers and cold). I bought a small coffee and added it to a frozen bottle, it made for a nice drink for last 8 miles.