There is going to be a large MeetUp at REI on Monday, November 30th. Joint member of all three groups Mary is setting up this event.
For more info check out the following: http://www.meetup.com/tcbicycling/calendar/11760300/
(biking group) http://www.meetup.com/wonro40/calendar/11909695/
Enjoy the event. I'll be out skiing in CO and will report back on the conditions.