Fri, Aug 27 - Sun, Aug 29, 2021

IRDC Thunder at the Ridge 2021

Ridge Motorsports Park, Road Course

About this event

International Race Car Drivers Club

Presents, the

Thunder at the Ridge 2021

A Double Race Weekend Plus

Friday Test and Tune and Competition Driver School and

Northwest Mini Enduro Championship Series

The Ridge Motorsports Park, Aug 27, 28, 29, 2021

Aug 27, 2021: Test-N-Tune

Aug 28, 29, 2021: Races

A rcontinued celebration of 50 years or IRDC racing & Northwest Mini Enduro Championship Series

These events are hosted by the International Race Drivers Club at Pacific Raceways under sanction by the International Conference of Sports Car Clubs – ICSCC, governed by 2021 ICSCC Competition Regulations (link to updated regulations coming soon).

Entries Open: July 3, 2021

Entries Close: Aug 29th at noon, 2021

Printable Race Entry Forms available online at,  However all actual registration and payment must be done through Motorsportsreg.

Entry Fees:

Package #1:  Single Day Only (either Saturday or Sunday)   ...   $200/Member...$225/Non-Member

Package #2: Weekend Entry (1 Entry both Saturday & Sunday)   ...   $350/Member...$400/Non-Member

Additional Race Groups  ...  $125/day

NWMECS 1-Hour Mini-Enduro   ...    $200.00 (co-drivers must register after main driver)

Friday Test & Tune ... $195

Spectators and Crew Members ... FREE + Our Thanks!  Come on out and invite your friends and family!

Payment must be made via credit card at MSR.  Billing will occur on Sunday of race weekend.  There is NO onsite registration.  Check with driver's Services for information.   Refunds will be issued if you cannot race.

Volunteer Signup Information:

This is a separate event.  You may access it under MSR events or use this url:

Test-n-Tune Information:

Test-n-Tune is for all drivers with a valid unrestricted competition license issued by ICSCC, SCCA, CACC, FIA, ASN, SOVREN or NASA, and for vehicles that are fully race-prepared. Other licenses (such as endurance racing organizations) may 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.

Test-n-Tune schedule

The number of run groups and the length of each session will depend on the number of entries. The schedule will be posted here once it is developed.

  • There will be a drivers meeting at 8:30am near the snack bar
  • The schedule will be finalized the week before the event and published here (on MSR)
  • Regardless of the final schedule, the first group out will be Open Wheel, at 9am

Race Eligibility

All drivers 18 years old and over with valid unrestricted competition license issued by ICSCC, SCCA, CACC, FIA, SOVREN, 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.


Race Announcement and Schedule:

2021 IRDC Aug Announcement.docx

Ridge Motorsports Park Supplement


Participant Health/Symptoms

Participants, crew and family at the direction of the Raceway or the event organizer or sanctioning body may be required to undergo a health screening check prior to entering the facility. This screening may involve a temperature check and a symptom and exposure questionnaire. Screening results will remain confidential. Participants, crew or family members who exhibit signs of acute respiratory illness and/or have a fever will be sent home. Participant, crew and family who have been exposed to someone COVID-19 positive or themselves have been tested positive must remain home for two weeks (14 days) minimum, or until asymptomatic.

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 (available soon)

Technical Inspection

Entries with a 2021 Annual Tech sticker on your logbook can complete your race tech form by registration and receive your weekend tech sticker. Drivers without a 2021 Annual must have your car and gear inspected by an authorized tech official. Tech officials will be roaming Friday evening, or bring your car and gear to the scale station area for inspection.  ALL CARS MUST HAVE A SIGNED TECH SHEET EVEN IF YOU HAVE AN ANNUAL INSPECTION in  order to receive your tech sticker.  No car is allowed on track on race days without the tech sticker. 






Event requirements

Thank you for using online entry system for the International Race Drivers Club.  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 NW 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, 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 Linda Blackburn or Chuck Arnold at

The registration processd will be different this year.  All payment is via the credit card you have on file with  You will not be charged till race weekend.  You can make changes to your registration, including canceling until midnight August 26thth.  You can get a tech sheet at Drivers Services or from a tech inspector.  Signed tech sheets must be turned in at Drivers Services.   

ALL CARS MUST HAVE A SIGNED TECH SHEET EVEN IF YOU HAVE AN ANNUAL INSPECTION in  order to receive your tech sticker.  No car is allowed on track on race days without the tech sticker.  No tech is required for Test and Tune.

Notice Regarding COVID-19


Ultimately, it is your responsibility to assess the risk to you, both on-track and off, and to make the decision on whether or not to participate. If you are feeling unwell or are experiencing symptoms such as fever, cough, or shortness of breath please stay home. If you have been in contact with someone who has been experiencing these symptoms in the last two weeks, please stay home.

We must COLLECT ENTRY FEE through MSR..  We will not be accepting checks, cash or payment at the track.  All must preregister and pay via MSR. Your card will not be charged until Sunday of race weekend.



Entries (124)

Mirko Freguia
Steve Litsky
Jason Raines
Colin Koehler
Tamer Ozkaraoglu
Michele Graaff
Nicholas Carbaugh
Josh Moriarty

Ridge Motorsports Park, Road Course

Shelton, WA
Download track map
Download track map


Club Race organized by

IRDC - Events

IRDC Thunder at the Ridge 2021

Fri, Aug 27 - Sun, Aug 29, 2021