How long was your test ride vs your first "real" ride?

I only ask because I bought my first road bike this year. My test ride was pretty short, and I thought the bike felt great. On my first real ride, I was in so much pain and discomfort after about 8 miles. I thought maybe I had made a bad decision and chosen the wrong size/frame, etc.

I went back to the LBS, they double checked the fit (and didn't change anything) and told me to keep riding. I did. Turns out I just was not used to the geometry of the new road bike over my old hybrid and it just took me a while to acclimate. Now...I love it.

Is your position on the new bike very different from your old bike?