bike rides

Hey Ladies,
I just recently moved to the greenpoint area and I have noticed that alot of people ride bikes. I have one of my own but was curious to know if anyone teams up to go for rides. I'm trying to do it as a form of cardio since I can't afford to go to a gym right now. Plus I really wouldn't mind seeing some sights.
Any info would be great, Thanks!

While it's not exactly leaving from the Greenpoint area, you still might be interested in this, planned for this sunday: http://www.brooklynian.com/forums/viewtopic.php?t=52151

Last year a handful+ of us went on a few rides, and it's continued into this year (though I've been on none since last year).

It's also not exactly meant to be exercise per se, but a bit more casual, and usually involves food and/or drinks, so yes, definitely not fitness-oriented.