Thanks to all for this great advice. I am going back to the Hill Sunday and will concentrate on gearing, and setteling in to my rhythm
Carol- the NYC advice is a huge help. Tomorrow, weather permitting, I am going to Central Park and do hill repeat exactly as you describe.
I am going to do the Montauk Century on May 20th, then concentrate for the Month of June on hills - and thanks to you I now know where to start! I am preparing for a charity ride of 111 miles with big hills at the start, in early August. I feel like I have a handle on distance (we'll find out for real on the Montauk) and now it's time to move on to challenging typography.