From the Three Rivers Park District website:
"Skijoring is a winter sport in which a person wearing Nordic skis is drawn over snow by a dog. With the help of Skijor USA members and a Skijor Now instructor this class for beginners learn the basics you need to skijor and how to train your dog. Gear provided. Dog and skis required. Reservations required."
To register, visit http://www.threeriversparks.org/events/S/skijoring.aspx