Was just going to do a short loop ride since it was 25 degrees out. Once I got started I realized I was plenty warm (just have to dress for it) so I extended the ride a bit up through Rock Creek Park in DC (54 miles). I ended up getting lost in NW, and ended up taking a loooong cruise down Wisconsin Ave. Not my favorite kind of riding! But overall it was a great, sunny ride. I didn't bring any food or water though, so I was a bit dehydrated by the time I got back. I don't think I've ever done a 50+ mile ride before without taking some kind of a rest break:
http://connect.garmin.com/activity/141962734