Details:York-Durham Heritage Railway - 2010 Special Events and Theme Trains
Weekends of October 23 & 24 and
October 30 & 31 - Four days of Halloween theme trains.
Weekends of December 4 & December 5, and December 11 & December 12 - Four days of Santa theme trains from Uxbridge only.
See
http://www.ydhr.on.ca for more information.