IMO, the most important thing on the bike is wind protection for my hands, feet and neck. Plus, on the bike, there's a lot more variability - I'll get really warm climbing the hills and really cold descending, so I need wind protection that's both stout and zippered.
The most important thing running is fabric that wicks and breathes so that I don't get waterlogged.
The difference is less about temperature, for me, than it is about protection strategy.
Also, keep notes in your training log of temperature, wind speed, cloud cover, and humidity; what you wore; and how your clothing choices worked. Then you can go back to those notes when deciding what to wear in the future.
Last edited by OakLeaf; 11-01-2010 at 05:14 AM.
Speed comes from what you put behind you. - Judi Ketteler