Fri, Aug 26 - Sun, Aug 28, 2022

Thunder on the Ridge - IRDC Race Weekend

Ridge Motorsports Park, Road Course

About this event

 International Race Car Drivers Club

Presents, the

2022 Thunder on the Ridge

A Double Race Weekend Plus

Northwest Mini Enduro Championship Series

Ridge Motorsports Park, August 26, 27 and 28 2022

August 26, 2022: Test-N-Tune

August 27 and 28, 2022 Races

These events are hosted by the International Race Drivers Club at The Ridge Motorsports Park under sanction by the International Conference of Sports Car Clubs – ICSCC, governed by 2022 ICSCC Competition Regulations.

Entries Open: July 17, 2022
Entries Close: August 28, 2022

Please click on the links below for detailed information.  

Race Schedule & Announcement

Friday Test and Tune - Schedule and Notes (Updated)

SUPPLEMENTS - for IRDC and Ridge Motorsports Park


Printable Race Entry Forms available online at, however all actual registrations are performed online at MSR Registration for Thunder on the Ridge

Entry Fees:

Package #1: Single Day (Saturday or Sunday)  ...   $240/Member...$260/Non-Member
Package #2: Weekend   (Saturday & Sunday)   ...   $425/Member...$450/Non-Member

Additional Race Groups             ... $160/day
NWMECS 1-Hour Mini-Enduro   ... $200.00 (co-drivers must register after main driver)
Friday Test & Tune                      ... $225

Volunteers and Crew Members  ... FREE + Our Thanks! 

Payment must be made via credit card at MSR.  Note billing will not occur until Monday August 29 based on your car being on track, please cancel your registration prior to the race if you cannot make it to the race,  Once a car is on the track on any of the three days {including Test and Tune} no refund will be given for that day.

Volunteer Information:
Volunteers registration is through seperate registarion located here at MSR: Volunteer Sign Up 

Test-n-Tune Information:
Test-n-Tune is for all drivers with a valid unrestricted competition license issued by ICSCC, SCCA, CACC, FIA, ASN or NASA, and for vehicles that are fully race-prepared. Other licenses (such as endurance racing organizations) must be approved by the ICSCC License Director. Novices must have pre-approval by the ICSCC License Director prior to registration. All drivers must be a minimum of 18 years old.

Race Eligibility

All drivers 18 years old and over with a valid unrestricted competition license issued by ICSCC, SCCA, CACC, FIA, ASN or NASA. Other licenses must be approved by the ICSCC License Director prior to registration. All race cars must meet current ICSCC published regulations.

Pit Parking - Camping is availiable Thursday night (after 7pm) for early arrivals. Please refer to the supplments for guidelines at the Ridge.

NW Mini Enduro Eligibility
All Closed Wheel race cars and Sports Racers that meet current ICSCC published regulations, and licensed race drivers (Novice not eligible).

NW Mini Enduro Supps/Rules

Technical Inspection

Entries with a 2022 Annual Tech sticker on your logbook can recieve your weekend race tech form at Drivers Services as well as the weekend tech sticker. Drivers services will in the classroom building between behind comsessions. Drivers without a 2022 Annual must have your car and gear inspected by an authorized tech official. Tech will be located in the vicinity of the scales near the pit wall..


Event requirements

Thank you for using online entry system for the International Race Drivers Club. ALL DRIVERS, CREW MEMBERS AND VOLUNTEERS must pre-register using this system.  If you follow these steps to create your account the first time you enter, your future entries with us will be quick and painless!  You can also use this same profile to register for other events on

  1. If you do not already have one, create an account on after reading these steps.
  2. Once logged in, click "My Account" at the top right.
  3. Review your vehicle(s) making sure to enter your preferred car numbers and your transponder number.
  4. Enter your medical information for the Ambulance/Life Support crew.
  5. If you already have an account and are a racer, please be sure your profile contains your club affiliation & competition license type.
  6. Now return to this page and enter the event and pay online.

If you have technical issues with online entry on, you can contact their customer support during normal business hours at 415-462-5603 or by email here.

You will receive an email confirmation of your entry automatically from the system.  If you have any questions about the event, please contact IRDC Registrar at .

The registration processed will be different this year.  Details are being worked out.  Please bring with your government or provincial driver's license with you to the event.  

We will not be accepting checks, cash or payment at the track.  All drivers must preregister through MSR, providing a valid credit card which will be charged for the races where there the driver's car appeared at the end of the weekend.

Entries (153)

Seth Thomas
Mike Allen
Dominic Martinolich
Cody Roaderick
Trout Roberts
Jason Raines
Scott Williams
Michael Buschman

Ridge Motorsports Park, Road Course

Shelton, WA
Download track map
Download track map


Club Race organized by

IRDC - Events

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Event over!