One time, years back, I was riding with a woman who couldn't have weighed more than 110. We were riding The Loop, and as we turned left off of Portola onto Alpine, she decided to do a pull. It was comical. She was working like mad to get up over 20 mph, and there I was, behind her, braking almost continuously to avoid rolling over her. After about 1/4 mile, I said, "Here. Let me", and took over. I can usually do high 20s down Alpine with very little work.