ON the weekends DH & I like to ride one of these rides.  He generally starts from home, which adds about 12mi to the totals listed.  If anyone wants to meet up on a Saturday morning or Sunday afternoon to do either of these rides, whenever, just post here and let us know.
 
http://ridewithgps.com/routes/750206  (longer ride)
http://ridewithgps.com/routes/750203 (shorter ride)
 
These are in Collin County, and I set the start point as Erwin Park, which also has some nice MTB trails for those so inclined.