The Thursday Rides are "decide & ride" rides. Those showing up choose where they wish to ride that day. Club Ride Policy applies to these rides. There no emails in advance of these rides or cue sheets. 

Meet at 8:45 am most Thursdays at Gateway Plaza (River Street and Highway l). These rides are 40-60 miles at a pace of 15-18 MPH with 2,000-5,000' of elevation gain.

http://www.santacruzcycling.org/content.aspx?page_id=87&club_id=575722&item_id=479319