Lizbids-

I ride in Central Park when I don't feel like leaving the city and, of course, I've encountered the same problems as you. I've discovered that it doesn't matter what the rules are or how unsafe it may be, many people are just going to be oblivious to their surroundings and walk in the road, so I adjust my riding accordingly - for my safety. I now usually stay at the north end of the park, where there are fewer "daydreamers", and do hill repeats. I usually ride early in the day. Perhaps you can restructure your workout in a similar fashion. (Are you riding in Prospect Park? There's a pretty good sized hill there.)

When cars are allowed in Central Park cyclists must use the bike lane (which is right next to the runner's lane - no barrier on either side). It's too dangerous to ride in the road with the traffic. Of course the runners, bladers, and pedestrians do not respect the bike lane, so the choice is either to get out of the city or ride early in the day. I believe the "unofficial" parks bicycle speed limit is 15 mph, but this is rarely, if ever, enforced AFAIK.

Also, for me it's just not worth getting aggravated about this. Everyone else has a right to enjoy the park too. I just have to be smarter than them if I want to stay safe.

Carol