WTC Registration is now open

Registration closes the Friday prior to the race event!

ISOC members who are not members of Winter Thunder Challenge must email our registration office at info@winterthunderchallenge.com with your ISOC Member number prior to registering for races to receive your non-member fee discount (equal to the non-member fee).  Please allow 1-2 days for processing.

Trail Stock racers, to avoid being charged the Track Maintenance Fee, you must email our registration office at info@winterthunderchallenge.com letting them know you are a non-member who will be racing in a trail stock class.  Otherwise the Track Maintenance Fee will be charged to your registration. Please allow 1-2 days for processing.