The wife, a buddy, and I went riding yesterday (to "Michael's" near Carborro, NC - anyone else?). It was about 55F when we left, and we figured it would warm up. All three of us in winter riding jackets and gloves. All wore jeans with no thermals, chaps, or riding pants.
Now, I have ridden all winter - once in the snow - and the only issue I generally have is that I do not have really good gloves for winter riding. Generally, I only go 15 to 20 miles to work, and it takes about 40 minutes.
Yesterday really nailed me though. We planned on a 50 to 60 mile ride, but as so often happens, we wound up doing about 90 miles. The temp never got above (if even to) 60F. 25-30 miles to our first stop with no problems. Decided to take a longer way back, which became a longer way back when a multiple cager accident blocked the highway.
Around the 60-mile total trip mark, the shivering started. I was bringing up the rear, so I did not force a stop. About 75 miles we finally hit a red light, and I suggested we "go this this place up the street," and get a drink. We stopped, but the place was closed. I admitted that I wanted to stop because of the cold - which they were as well. I can get a bit uppity about being the only all-weather rider of the three, so maybe they didn't want to look wimpy

The moral... We all should have dressed warmer. Cutting through 50-60 degree wind at 60MPH can really pull the heat out of you. Once I got home it was hours before I felt warm again, and today the muscles are far stiffer than 90 miles on an uncomfortable bike ussually causes. Also, I should have forced a stop of the group when I noticed how bad I was getting. If you are shivering, you are pretty desperately cold, and continuing to ride will only worsen the issue. Also, if you are shivering, and then stop shivering... Definitely pull over. That might be your body's way of saying, "I give up!" - a precursor to hypothermia.
--David
