Boy I'll say it was a crash course in reality for everyone! Thank you for the input and reality check. I'm facing my first 40k TT this weekend. I'll say this, I'm not fast, but I'm determined. You all have given some very sound advice that I plan to consider. I think I'm riding a Catrike so I'm not expecting really high speeds, but I would like to keep my cadance up around 100. My best speed is usually around 18-24mph. How long can I sustain that speed? I guess I'll find out on Sunday. Wish me luck girls. I raced North Manchester,IN this last weekend and tied for second place in the women's class with Jane Hunn, who is a very tallented recumbent rider. I never worked so hard in my life....nor have I ever felt better. If you've never raced, take my advice. TRY IT! Win or loose, you'll have a ball.