Fri, Sep 24, 2021

PCA Diablo DE Event - Thunderhill Raceway

Thunderhill Raceway Park

About this event


Porsche Club of America Diablo Region Track Day at Thunderhill Raceway

Sponsored by Porsche Livermore

3 Mile Circuit

Friday, September 24, 2021

Limited size run groups, lots of track space, tons of track time

"Have Fun, Be Safe, Drive Fast"

THIS EVENT IS FOR PORSCHE CARS ONLY - All event details can be found at





8/31/21: All non-Sponsored participants registering for Advanced run group are being placed on a wait list.  The final disposition of wait listed drivers will be determined on September 14.

9/9/21: All non-Sponsored participant run groups (Beginner Lead/Follow, Beginner Solo, Intermediate, Advanced) are being placed on a wait list.  The final disposition of wait listed drivers will be determined on September 14.

9/15/21; All non-Sponsored participant run groups, the Instructor run group, and their respective wait lists, are full.

General Event Information:

This event is open to all Porsche drivers.  Only Porsche cars are allowed.

We are a Porsche club, not a driving school or a driving business.  We run several safe, fun and friendly track events each year. We do not race, time trial or time laps. We limit this event to 25 cars per run group so that we can offer plenty of room on track and lots of track time. The DE team will review all registered drivers and will confirm the run group classification for each driver based on overall track experience.  During the event the DE team will work to accommodate drivers wishing to change run groups, subject to approval by our Chief Driving Instructor (CDI).  

Drivers Who Require Instruction:

If you have not been approved to drive solo on the track you will need to register as Beginner Lead/Follow, where we will provide an instructor for you.  We are planning to offer in-car instruction for consenting vaccinated individuals (student and driver), along with offering a limited number of spots for Beginner Lead / Follow Instruction for others. 

Reservations for drivers who need instruction is on a first come, first served basis.  All Lead-Follow Instruction will conform to the Porsche Club of America protocol, where student (non-solo certified drivers) will drive solo in their car, but will be following a certified instructor who is driving their own car.  Both instructor and student will communicate using radio equipment.   

At this time all participants registering as Beginner Lead-Follow will be placed in a wait-list, while we confirm the total number of Instructors for this event.  This wait list will be cleared on a first registered/first cleared basis. 

We expect to finalize the Beginner Lead-Follow/Beginner Instruction participation list on September 14.

IMPORTANT: Helmet Rating Requirements:

You can bring an approved helmet to this DE event, or you can rent one on the day of the event from Thunderhill Raceway.

PCA has updated their helmet requirements: "COVID related supply chain disruptions have limited availability of Snell 2020 Rated helmets. PCA does not want to force members to compromise on such an important piece of safety equipment. We have therefore decided to continue allowing 2010 helmets through the end of 2021. As supplies improve, we do encourage those of you with 2010 helmets to replace them without waiting for the hard cutoff at the beginning of 2022. 2020 helmets are available, but in limited supply. If you have helmet preferences, please prepare for the changeover and start shopping for that new helmet."

COVID-19 Related Changes:

Due to Covid-19 restrictions and requirements, this event will be run differently than pre-Covid-19 Diablo PCA DE events:

  • All participants may need to read, sign, and return specific waivers that will be provided before the event and also at the entrance of the race track.  
  • Event details, such as the DE 101/201 class, meals at the event, and general event logistics, will be communicated to registered participants as we get closer to the event date. 

We appreciate your understanding and cooperation.

Passing will be with mandatory point-by in all groups:

We take safety very seriously, and will “black flag” any participant who disregards passing protocols or consistently fails to give point by's, including denying access to the track with no refund of registration fees if deemed necessary by the safety officer. 

Safety Inspection Information:

All drivers must certify that their car has passed a safety inspection by an authorized person within 30 days of this event, per PCA guidelines.  The safety inspection form can be downloaded from our DE website ( All drivers must complete this safety inspection form to verify that the condition of their car is ready for the track. Well maintained Porsches should have no problem passing tech inspection if they have good brakes, tires, no oil leaks and no defects. If in doubt, have the experts look at your car.  

The following sponsor is offering free tech inspections:

  • Kahlers in Dublin – by appointment. only

Contact them at or by phone at 925-829-2050

  • Porsche Livermore - by appointment only

Contact the Porsche Livermore Service Department at (925) 344-5609

Pre-Event Meeting

Our DE 101 pre-event meeting will be held on Wednesday the 8th of September at Porsche Livermore from 6:00pm to 8:00pm.  We ask that every registered driver attend this event, but it is highly recommended for all new to DE drivers.


All instructors will need to drive their car on the track, and must have been certified by a PCA Region to provide Lead-Follow instruction.  The Diablo Region DE team will review all Instructor sign-ups.  No non-driving instructors are needed for this event.

We are allowing non-driving instructors to register.

Private Instructors/Coaches:

Private instructors/coaches are welcome to attend our events once approved by our Chief Driving Instructor (CDI).  If you are bringing a coach to provide you instruction, please be aware that your instructor will need to:

  1. Contact our CDI to discuss their participation and obtain approval. 
  2. Need to register on MSR as an ‘Instructing Only’ instructor, and also list your name in the ‘Are You Sharing a Car’ section of their registration form.
  3. Will not drive their own cars on the track (unless they have registered as a participant and pay the participant fee).
  4. Adhere to all Diablo PCA and track operator requirements

Private instructors/coaches who show up at the day of the event without following the pre-registration requirements are not guaranteed to participate in this event.  Please contact the CDI if you have any questions.

Two Drivers Sharing One Car:

If two different drivers are planning to drive the same vehicle, BOTH drivers must reside in the same household, per COVID-19 requirements, AND must be qualified to drive in different run groups (i.e., one driver must have enough DE experience to run in a higher run group than the other driver).  Both drivers will not be allowed to drive in the same run group.  

No passengers or guests are allowed in cars during hot lap sessions.    

Run Group Selection:

  • 4 Run Groups: Beginner Lead/Follow, Beginner Solo, Intermediate, Advanced/Instructor (Note: Run group classifications may change depending on the number of cars registered)
    • Drivers with 5 or less track days, or have not been cleared to drive solo, must register as Beginner Lead/Follow  (Wait List)  
    • Drivers with 19 or less track days and have been cleared to drive solo should register as Beginner Solo or Intermediate   (Wait List)
    • Drivers with 20 or more track days or Instructor experience can register as Advanced (Wait List) 

Registration Fee: $425 for Beginner Lead-Follow Drivers, $375 for Solo Approved Drivers

  • Registration will close when the maximum driver count is reached, or on midnight September 17, 2021, whichever is earlier.
  • All registrations are considered preliminary until confirmed by the DE committee.  You will be notified once your registration is confirmed, or if you are wait-listed, or if we were not able to accommodate your registration for this event.
  • All refunds are subject to a $75 cancelation fee.  Sorry, no refunds after September 15, 2021.  
  • Instructors who will also drive their car are $150 / Instructors not driving are free 


Event requirements


Thunderhill Raceway

1.  Registration is Critical – priority for acceptance into this limited Event is decided by date of registration.  In the unfortunate Event that you register but we don’t have a place available, you will not be charged for registration or a cancelation fee.  Your credit card is not charged at time of registration.  It will be charged on a space available basis as we confirm you into the Event and prior to the Event taking place.

2.  Drivers are invited (strongly recommended) to attend our DE Introduction briefing called DE 101 / 201, which is typically held two weeks prior to the Event.  Currenty this DE 101 / 201 event is planned to occur at Porsche Livermore.  We will have a discussion on driving Thunderhill Raceway and an opportunity for drivers of any level to share their experiences, ask questions, etc.

3.  Final Event details, schedules and instructions will be emailed to you about 1 week before the Event. 

4.  Only one participant and one family member are allowed per registered vehicle.

5.  Anyone who has tested positive for COVID-19, has exhibited any COVID-19 symptoms, or has had close personal contact with anyone else who is exhibiting COVID-19 symptoms within two weeks of the Event is not allowed to attend the Event.  The symptoms of COVID-19 may include, without limitation, cough, shortness of breath or difficulty breathing, fever, chills, muscle pain, sore throat, or new loss of taste or smell is not feeling well,  experiencing a cough or fever, are requested to stay home.

6.  All participants and any family members attending the Event must provide a driver’s license or other photo ID to gain entrance to the paddock. 

7.  Participants and guests must provide their own face masks.  You must wear your mask when checking in at the gate.  Masks must be worn at all times when outside of a vehicle.  Gloves are also recommended.

8.  Temperatures will be checked with No Touch Thermometers upon entry to the paddock.  Those recording a temperature of 100.4° F or higher will be turned away.

9.  Registration check-in will also be at the entry to the paddock.  On the morning of the Event, you must present the Registrar with a completed safety inspection form (the driver certifies that their car has undergone a safety inspection by an authorized person within 30 days of the Event).  Please find our Tech Inspection form here

10.  We will supply disposable vinyl numbers for your car, which you can place on the glass of your windshield and rear window.

11.  All drivers must attend the mandatory driver’s meeting, which takes place before the track is opened.  We will review important information, such as passing and safety rules, the flags used by corner workers, the condition of the track, etc.  You will receive your run group wrist band at the end of the morning meeting.  No one will be allowed onto the track without a wrist band.

12.  If you arrive to the track after the morning meeting, you must meet with a Diablo DE team member to complete the registration process, turn in your completed Tech Inspection Form, review the items discussed during the morning meeting, and receive your wrist band.  You will not be allowed to go on the track until you have done this.

13.  Social distancing must be practiced at all times during the Event.  No social grouping is allowed while on track or in the pit lane.  No more than six (6) people will be allowed in any one area and 6 foot distancing must be adhered to all times.  Face masks are to be worn when you are outside of a vehicle.  Paddock layout must demonstrate 8 feet of separation between vehicles.

14.  If you are sharing a car with someone who you reside with, you both need to register separately and in different run groups.  The registration form has a section where you can provide your car sharing details.

15.  Helmets are required and must meet Snell SA 2010 or newer standards.  No motorcycle helmets are allowed.  Helmets can be rented at the track.

16.  High speed driving is inherently dangerous and all drivers and other participants in a PCA Diablo Region DE Event must accept and assume the risks associated with this sport.  All participants must sign the PCA Release and Waiver of Liability, Assumption of Risk and Indemnity Agreement.  Before the Event, members of the DE team will drive around the track to look for any unusual conditions on or around the track, such as mud, water or other debris, sand bags or other objects, uneven surfaces, etc., and we will discuss any such unusual conditions during the morning driver’s meeting.  However, the PCA Diablo Region and our DE team members are not experts about track conditions and safety or about conducting track inspections, and you should not rely on us to spot or notify you about every potential hazard you might encounter during this Event.  You are ultimately responsible for driving safely, which includes being aware of the track conditions.  We encourage you to conduct your own inspection of the track and its environs in order to spot and avoid potential hazards on or around the track, such as walls, tire barriers, mud, water or other debris, sand bags or other objects, uneven surfaces, etc.

Questions?  Ask the DE Committee chair, Adam Cipriano (


Entries (106)

Michael Cullinan
Terry Erdei
Tim Smith
Adam Cipriano
Colm Campbell
Sean Neel
Kenneth Wu
Jon Rhodes

Thunderhill Raceway Park

Willows, CA
Download track map
Download track map
Buy virtual track walk
Buy virtual track walk


Driver School organized by

PCA - Diablo

Event over!