Event #3566: Jul 31st - Aug 1st, 2021

July 31-August 1, 2021: Thunderhill

Thunderhill white logo large

Event Information

Date: Jul 31st - Aug 1st, 2021

Track Name: Thunderhill Raceway Park

Configuration: Road Course

Direction: East 3 mile CCW

Welcome to Thunderhill Raceway! Time for some fun in the sun!

IMPORTANT: In-car instruction for HPDE1 will be available for this event! When registering for HPDE1, please indicate if you would like in-car or lead-follow instruction. If you have prior track experience, specify in the comments field at check out. Your instructor will reach out to you with further information. Spectators allowed!  Camping in the paddock is allowed. Café will be open. NASA BBQ is back!!

Thunderhill Online Speedwaiver: https://thunderhill.speedwaiver.com/. $10 gate entry fee for everyone, except hard-card carrying officials. Admission good for the weekend, save your ticket stub. Gates open at 6 AM and close at midnight.

FRIDAY TESTING AVAILABLE! Register directly here: https://trackmasters-racing.com/index.cfm?fuseaction=home.eventDetails&event_id=374


If you do not see the HPDE Group that you want, it means that it's full. If you are unsure of which HPDE level to choose, check here for more info: https://nasanorcal.com/hpde-get-started/.

HPDE / TT / Open Track Groupings for this event:


- HPDE 1 & 2

- HPDE 3

- HPDE 4

- TT


- HPDE 1 & 2

- HPDE 3

- HPDE 4

- TT



Do not choose "instructor" below. One will be assigned to you automatically.


HPDE 2 is for drivers that have been signed off to drive on their own, but just want more time in HPDE 1. So, Group 2 is Group 1 (and runs with Group 1), but they have no instructor assignment. Please check the website or contact the group leader to make sure you are eligible. https://nasanorcal.com/hpde-get-started/.


There will be at least four 20-minute sessions. Please check the website or contact the group leader to make sure you are eligible. https://nasanorcal.com/hpde-get-started/.

Sunday only entrants MUST have completed a prior Sunday HPDE3 event to be eligible.


There will be at least four 20-minute sessions. Please check the website or contact the group leader to make sure you are eligible. https://nasanorcal.com/hpde-get-started/.



All regular NASA race groups: AI, AIX, CMC, FFC, GTS, PRC, PT, ST, HC, NP01, SM, SI, ST, STR, SU, SpecE30, SE46, SpecZ, Pro, Semi-Pro, Thunder Roadster.

LATE REGISTRATION FEE: Online registration closes Tuesday at 6 PM week of the event. After that, all registrations must be done at the track and pay a $100 late fee.

License: Your competition license is good for one season. Purchase your season license online in your member account. Apply for a new NASA license here: https://form.jotform.com/drivenasa/license-application

Medicals: if your medical is expired, you're ineligible to race! Use this link to renew your medical info: https://form.jotform.com/drivenasa/nasa-medical-application


Spec Miata / Spec E30 drivers may Supersize to ST.


There is a STRICT sound limit of 103 dBA measured 50’ from the line on driver’s right, apex of T15. Attempts to fool the meter or lift will easily be detected by the track’s dedicated sound person (they hate that!). So, please prepare to adjust your muffling system if necessary. This is the same standard that has been in place for years.


Please review the Acceptance Package for more info: https://nasanorcal.com/wp-content/uploads/2020/01/Acceptance-Package.pdf

There is a $10 fee per person per event at the gate (Keep your stub for the weekend).

Schedules and paddock maps will not be available until the week of the event.

Your car must be tech'd before going on track.


HPDE/School/Open Track: Full refund less $30.00 processing fee, with at least 1 week notice prior to the event, otherwise no refunds or credits. No exceptions.

Race Groups: Fees are fully refundable, less a $30 processing fee, provided that you registered at least 12 days in advance and you notify your NASA region within 5 days following the missed event. No partial refunds allowed. This policy does not apply to special events. Once the car hits the track all fees are non refundable.

Online Reg Closes Tue, Jul 27, 11:59 PM.

Registration is closed for this event!