The Circuit: 3 Days, 300 Miles, in your RACECAR!

Street Cars Only!

Come with us as we run 200+ racecars and 100 Road Trip cars along Route 66 from Tulsa Raceway Park to Thunder Valley Raceway Park and back for the 7th running of The Circuit.

The Circuit drag and drive has always been about supporting local children’s charities and for 2026, we will be supporting Youth Services of Tulsa for the second year. YST provides support for young men and women aged 12-22, through 20 different programs.

We are SOLD OUT of Racer Tickets, but you can sign up for the Road Trip package or jump on the Waitlist to be alerted when a racer spot becomes available. Keep working on your car and plan to be here, don’t just whine and complain that you missed a spot…..

Event entry includes Pre-Party Dinner, 2 event shirts, one event decal kit, Party Entry for Racer and Co-Pilot, 3 days of track entry fee for both driver and one passenger, and one tech card to both Tulsa Raceway Park and Thunder Valley Raceway Park.

A portion of the proceeds from the event will be donated directly to a Youth Services of Tulsa.

Road Trippers – Be a part of the fun, without the headache of racing! Special Windshield Decals, Special Up-Front Parking, Snacks/Drinks, Track Entry for driver and co-pilot. $200 for Driver and 1 Copilot. Additional riders – $50 each.

In 2026, Route 66 turns 100—and The Circuit Road Trip puts you right in the middle of it. May 1–3 starts at Tulsa Raceway Park with front-row parking ahead of 200+ racecars, then sends you down the Mother Road on the same route as the racers, packed with photo stops and hidden gems on the way to Oklahoma City.

Day two puts your car on display at Thunder Valley Raceway Park, then rolls into the Racer Party at Oklahoma Motorsports Complex—40+ mph go-karts, pizza, and bench-racing that goes late. Sunday finishes back at Tulsa Raceway Park after 300+ miles of Route 66 memories, iconic stops, and stories you’ll keep forever.

Only 100 Road Trip spots are available—and they come with prime parking, exclusive decals, first shot at open race entries, and early discounted entry for The Circuit 2027. If Route 66 means something to you, this is your year—build the car and lock your spot now.

The Circuit 2026 Event Schedule

Thursday April 30

Early Tech on Thursday 12-4PM – $50, directly donated to the charity, limit of 100 teams

12-4pm – Early Tech and Trailer Drop

6-10pm – Dinner open to Racer and Passengers at local restaurant. You want to be here!

Friday May 1st - Tulsa Raceway Park

8:00am – Gates open

Tech is open from 9am until 2pm. Driver Meeting at 9:45am. Open Track from 10am to 4pm.

Saturday - Thunder Valley Raceway Park

10:00am – Gates open

Open Track from Noon – 5pm.

The Circuit Racer Party – 6pm-10pm

Participants can expect a night of fun and friendly competition to unwind after two days of racing.

Sunday - Tulsa Raceway Park

Car Show/Touch a Truck/Test and Tune - 8am to 11am

Track open from 11am until 3pm.

Awards at 4:00pm.

We are not regulating the vehicles your family or friends may be following along with. We welcome and encourage you to bring them to this event. If your race vehicle must go onto a trailer or be towed in any manner at any time, you will be disqualified. It must run 100% of the time under its own power. Exception: pushing by hand is accepted if you run out of gas.

Questions? - Message us at dragdriverepeat@gmail.com

VEHICLE RULES FOR ALL CLASSES

*All entries must have current and legal vehicle registration and insurance with paperwork that matches the VIN and license plate on the car.

*No rental cars allowed.

*Vehicles in competition must have functional headlights, taillights, brake lights, turn signals, HORN, and a rearview mirror. Trailer must have safety chains and working brake lights.

*Equipment rules apply to both the street and track portions of the event.

*All tire rules apply only on the drag strip and not for the street drive.

*All vehicles must meet NHRA safety rules for the e.t. and speed they are capable of, and drivers must be IHRA or NHRA licensed if required. The Circuit officials will not accept time slips that are quicker or faster than the car or driver’s tech’d legal e.t. and mph. Running quicker than the safety equipment or driver’s race license allows is cause for disqualification at the discretion of the race director.

*Engine Swaps are allowed as emergency replacement only. Racers Can Not swap engines to race.

*”Beam Break” is allowed and will result in a 20 Second ET.

*In Naturally Aspirated classes, the engine may not use power adders of any kind.

*In Power Adder classes, the engine must use a supercharger, turbocharger, nitrous oxide, or some combination thereof.

*In Small-Block classes, engine displacement must be 430 ci and below, and the engine may not be a Mopar 426-based Hemi, a Chrysler early Hemi, a big-block Mopar, a big-block Chevy, a big-block Ford, or an FE Ford.

*In Big-Block classes, engine displacement must be 431 ci and above. All Mopar 426-based Hemis, Chrysler early Hemis, big-block Mopars, big-block Chevys, big-block Fords, and FE Fords will run in Big-Block classes regardless of displacement.

*It’s the responsibility of the racer to know and comply with the rules; passing tech inspection does not constitute a right to remain in competition if rules violations are discovered later.

*Vehicles must compete in the slowest class for which they are eligible.

*Vehicles with rule variations may be classified at the race director’s discretion.

*Entries that are disqualified from competition are not eligible for a refund of registration fees.

*The Circuit uses a .400 Pro Tree for all classes.

*Trailer rule: Single axle…

NO SUPPORT VEHICLES (Not Road Trippers)

•Vehicles in competition may not be led or followed at any distance by support vehicles of any kind. A support vehicle is one used to supply, or with the intent of supplying, any rescue efforts or to carry anything for a competitor, including luggage, tools, fuel, repair parts or spares, and helpers or crew.

•All vehicles must be driven under their own power during the entire competition and may not be towed, trailered, pushed, or hauled at any time. The exception is in the event of an emergency in which a vehicle needs to be removed from the roadway or other dangerous situation, in which case assistance may be used to move the car a short distance to a safe area, for example, to the next highway exit.

•Violation of the support-vehicle and crew rules is cause for immediate disqualification at the race director’s discretion.

RV/Campers – We encourage racers to bring the family. If a racer is using a camper/RV for sleeping, you must treat it as a hotel room (unless towing with racecar). You can not store clothes, fuel, or supplies of any kind during open track or drive time. Racers MUST carry all needs with them in their car/trailer. Racers MUST park far away from camper/RV. We will have designated parking for Campers/RVs.

The Circuit Classes and Rules

Racers will be able to change classes on Friday ONLY and must do so, in person, before submitting their timeslips.

2 time slips from each day required. Turn in time slips to The Circuit registration table EACH DAY!

Champion and Runner-Up Trophies for Each Class, except Tailgate (You VS You Awards 1-2-3)

The Circuit 2025 Class Rules

Drag Strip Rules

All Classes are .400 Pro Tree

If running Hard Tire, you will run first in Open Group

All Hard Tires to run out of the Groove (Straddle the sticky parts)

Lane Calls for The Circuit 2026

We will run in Groups by ET, similar to the style of the National Level events.

Group A will be 11.49 and Quicker cars on Slicks or Radials.

Group B will be 11.50 and slower cars on Slicks or Radials.

Hard Tire cars will be called first for the Open Run.

We will be using a punch card and you will only be allowed TWO passes during your Group Calls.

**WE WILL call up the other Group if the lanes are slow before the time is up (except for Hard Tire).

The current run schedule looks like this:

Friday: Group A 10-12, Group B 12-2, Open 2-Lanes Close or 4pm (with Hard Tire First)

Saturday: Group B 10-12, Group A 12-2, Open 2-Lanes Close or 4pm (with Hard Tire First)

Sunday: Group A 10-12, Group B 12-2, Open 2-Lanes Close or 4pm (with Hard Tires First)

Quarter Mile Classes

**Street Race Power Adder by Mahle Motorsports – 315/60-15 or smaller Radial (29×10.5 Non-W Slick or smaller), 8.500 ¼ Mile ET or Slower, Big Block or Small Block engine, Any Power Adder, Must be Stock Appearing body

**All Motor Small Block by WAF Racing – engine displacement must be 430 ci and below, and the engine may not be a Mopar 426-based Hemi, a Chrysler early Hemi, a big-block Mopar, a big-block Chevy, a big-block Ford, or an FE Ford. – Same as HRDW except Open to any size slick or drag radial. –

** All Motor Big Block – engine displacement must be 431 ci and above. All Mopar 426-based Hemis, Chrysler early Hemis, big-block Mopars, big-block Chevys, big-block Fords, and FE Fords will run in Big-Block classes regardless of displacement. Same as HRDW except Open to any size slick or drag radial.

**Gasser/Hot Rod – Vehicles pre1972 – No Muscle Cars unless solid axle swap or lifted front suspension (Gasser appearance), Single Power Adder, No Beadlocks, No Wheelie Bars, Must Fit Class Appearance – Class is Combined for 2025+ (unless 6 cars each NA and PA are present at Registration)

**Stick Shift by Jerry’s Performance – Must use manual H-Pattern transmission, Shifts must be made by the driver with a mechanical lever, no air shifters allowed. Clutch must be activated by a pedal by the driver. Lenco-type planetary transmissions prohibited.

**Overdrive by Padgett Performance

Any Tire, Any Power Adder, Must have Overdrive Transmission. GearVendors style overdrive not allowed.

**You VS You by CarChains 3D

**10.000+ ET – Class is about consistency, no matter your ET.

Class Standings determined by Margin of Difference in Driver’s Quickest and Slowest Time Slips. Example: Day 1 ET1: 12.345 ET2: 12.286, Day 2 ET1: 12.555 ET2: 12.401, Day 3 ET1: 12.307 ET2: 12.493 – Quickest ET: 12.286 – Slowest ET: 12.555 = Difference of 0.269

Any Tire, Any Event Legal Car

**11.00 Index by AT Industries – Follows RMRW rules (except tire)

Any size tire – Must be stock appearing – Lexan windows are not allowed (unless backglass of truck for down bars) – Must have a dash, front seats, carpet, and door panels

**12.00 Index by AT Industries – Follows RMRW rules (except tire)

Any size tire – Must be stock appearing – Lexan windows are not allowed (unless backglass of truck for down bars) – Must have a dash, front seats, carpet, and door panels

** Motorcycle – Traditional motorcycle or trike with single front wheel. Slingshot type vehicles will race in appropriate vehicle classes.

Eighth Mile Classes

**Junior Street by Bolding Autobody & Bastrop Chiropractic - For ages 13 to 16 1/8th mile. No Quicker than 9 second 1/8 Mile ET can be turned in.

Must have NHRA Junior Street License

Parent has to drive non-driver license or non-permit drivers from track to track.

Limit 16 Racers

Class Standings based on You VS You Format - Spread between Slowest and Quickest ET of the Event

**Small Tire by Shahan Performance & Fabrication – 315 radials/ 29×10.5 (Non-W) permitted

– Imports running a 4 cylinder or smaller 28×10.5W tire is permitted

– All 6 cylinder, 4 cylinder and rotary engines can have dual power adders. V8 engines are limited to ONE power adder.

– The car must retain its original appearance, profiles, and dimensions. Aftermarket fiberglass and/or carbon fiber replacement panels are allowed. All body panels must be factory style. Aftermarket wings and spoilers are permitted. Forward facing hood scoops/turbo or supercharger inlets are permitted. No complete carbon fiber or fiber glass aftermarket bodies.

**6.50 Index – No passes quicker than 6.50 to be submitted. Racer closest to 6.500 Event Average wins class.

**Tailgate presented by Cornerstone Performance Transmission

– vehicle with bed and tailgate only (El Camino/Ranchos allowed)

-no SUVs or wagons -back half allowed -2wd any tire -4wd 10.5 tire max width

-any single power adder -any fuel – radial or slick only

Top 4 shootout last day

(4 pass average from day 1+2 to find top 4)

6 passes total still required

Trophies for Quickest Overall PLUS Most Consistent

**Unlimited by AT Industries – You got it, run it. Must be legal to operate on the roadways and complete the trip with no assistance.

BONUS CLASS:

Cheap Car Challenge

$3k total budget (including car)

Three trophies sponsored by US Motorworks - Quickest Average, Most Consistent and Fan Favorite (voted on by Racers)

Cheap Car Challenge Class rules

Budget $3,000

Contact: Casey Mathews

All entries must meet Event Rules in addition to the rules below

For every $100 over you have to add 1 tenth to your Event Average, for every $100 you are under you get to subtract a tenth.

If you already have a car you want to use it will be valued at fair market value (voted on by the committee). If you purchase a car from someone you know and the deal is too good to be true, it will be valued at fair market value. If you purchase the car off Craigslist, Marketplace, auction from someone you do not know you are good. Submit your car to the committee with screen shots of the ad, text and messages with the seller, or even a video of the purchase. We are just trying to make this as close and as fair for everyone as possible. You CAN sell parts off the car to recoup money. But if you sell something like the drivers seat and buy a kirkey you can not claim the value of the drivers seat.

If you buy a parts car you can take what you need off the car and scrap the vehicle to recoup money. This is scrap steel weight only, you can not sell the cats and or parts of the car and deduct that money.

Please claim all parts purchased even if it’s little stuff as this adds up.

SAFETY.

No safety items are included in the cost of the car. You can build a cage if you want since all it does is add weight. No you can not build a tube chassis car and claim that as the roll cage. Any stock replacement suspension parts, c clip eliminators, oem brakes. Can not put light weight racing brakes on the car and claim as a safety item. You can and are encouraged to install harnesses and racing seats.

Engine containment:

If you are running a power adder. Such as nitrous, turbo or supercharger you need to install a engine diaper or catch pan.

This class is meant to be a relaxed fun class where we all help each other and have a good time. This is not a grey area class, if you do something to try to go around the rules the committee will vote and make a decision. My vision for this class is for you and your buddies to go by a $1500 car, clean it up, slap some nitrous on it and have fun. Not spend 6 months and 400 hours building something. We can all build a 10 second car that we only have $3,000 in technically but that’s not what this class is about.