I live in Brooklyn, NY and thank god for Prospect Park 3 blocks away! I rode 15 miles there the other day by doing laps (3.3 miles) and half-laps (there is a road that cuts the park in half). I assume I'll get tired of that, though, and will have to make some excursions. There are lots of good places to ride here (there's a bike path that goes practically all the way around Manhattan), but I'll have to take my bike on the subway, or brave lots of traffic (and bridges!) to get to them. On weekends my husband and I will probably get into the habit of driving out of town to nice, bikeable areas.