Central Park is huge, so we thought we were clever to ride bikes around it, so we could see all of it. The bike track is perfect for riding, although the hills are challenging especially if you are on a bike with no gears and a back pedal brake.
DON'T go to the bike hire place in the car park near the cafe, go to the one near one of the entrances. We went to the former and while we had a good time and it was cheap, it was definitely dangerous and too much hard work. Central Park is really interesting by the way and reasonably well kept.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.