Did the course only once. Chuck Ayers gave me a sharp look when I told him I did it twice last year. Maybe that factored into my thinking. But a bigger factor was that this year, I did CH on a single speed. With 34/16 gearing into 700C x 32, it's a bit stiff up the hills. After 33 miles of that, I was --What's the word? Tired.
Oh, and it was cold this year. Didn't get rained on like later riders, but did get hail and a little snow. A little windy too, as in fight-to-keep-your-bike-up windy.