2026 Battle of the Fenders Registration NOW OPEN
November 27-28, 2026
$2,500 TO WIN
EVENT INFORMATION
Friday, November 27th, 2026
Colorado National Speedway will open the pits on Friday from 1pm to 5pm for parking, tech, and tire mounting; as well as some practice time for those who want it. Track time will cost $25 per car, and waivers must be signed, and just a $10 charge for crew. Pit stalls will be assigned on a first-come, first-serve basis, and trailers may be parked overnight.
Saturday, November 28th, 2026
Gates will open at 8am, and the race will begin at 11:00am. Pits will be open to everyone for $10 per person (Drivers, Spectators, & Crew). No grandstand side seating will be open for this event, and everyone buys a ticket at the pits. Concessions will be available on race day. Rain make-up dates will be Friday, December 11th, 2026 (practice) and Saturday, December 12th, 2026 (race).
REGISTRATION
You can fill out the 2026 Registration on the CNS Website:
Registration will be $100 per car for early registrations submitted by 6:00pm on Friday, November 27. All registrations received at the gate on Saturday morning, November 28, will cost $125. Registration is only available online. (see link above).
STARTING LINEUP
Each Driver will receive a raffle ticket when they buy their pit pass Saturday morning. At the Driver’s meeting, the lineup will be assigned by raffle ticket drawing. Drivers will receive additional lineup instructions at the Driver’s meeting.
THE RACE
The idea is for all stock-car-style cars that drove off an assembly plant twenty-plus years ago, big or small, fast or slow, to roar once more. Three hundred laps will become the Equalizer regardless of how many pistons or horsepower you may or may not have.
The rules for the event will be as follows:
SAFETY REQUIREMENTS
RULE #1 is safety, and all cars must comply with all safety regulations. Safety equipment must include Snell rated SA2020 helmet, fire suit, gloves, neck brace or restraint, full containment seat, minimum 4-point roll cage with door bars, Roll cage must be at least a 4-post design and must be located directly behind the driver and forward to the A pillar. The roll bar must be back-braced from the top of the bars to the rear of the frame (or floor plate) at an appropriate 45-degree angle. Roll Bar padding is recommended for any part of the roll cage that can be contacted by the driver during an accident. It is recommended that 1/8-inch steel plate be welded to cover left side door bars. An onboard fire extinguisher must be mounted within the driver's reach. Antifreeze/Coolant is not permitted. Raceivers are optional but highly recommended.
VEHICLE ELIGIBILITY
The division or series your vehicle ran last is the set of rules you will go by. NO Double Pumper Holly or 4 Barrell Carburetors permitted. Oil drain plugs and rearend plugs must be safety wired. If you are running a non-CNS division car, please send a copy of the Rules you run under to tech@coloradospeedway.com by Monday, November 16th. If you fail to provide the Rules, you will start at the back or may not be permitted to race altogether.
BREAKOUT RULE
Breakout is set to a lap of 19.495 seconds.
Each driver is allowed up to 3 breakout laps (laps faster than 19.495) without penalty.
Starting with the 4th breakout lap, one lap will be deducted from the competitor’s total lap count for each additional breakout lap per half of the 300-lap race.
A breakout will not apply if there are 60+ cars to take the green flag.
DRIVER & PASSENGER REQUIREMENTS
Driver minimum age is 14 as of November 27th, 2026.
Passengers must be approved by Tech prior to 5pm on Friday November 27th, 2026. Questions?
TIRES
The only Tires permitted are DOT tires not larger than 60 series, Dirt IMCA tires, and 8-inch Hoosier Comanche. NO slicks will be permitted. New and Used Hoosier Comanche 8-inch tires will be available at the Speedway. Again, tire sales and mounting will be available at the track on Friday November 27th from 2-6pm and Saturday race day. No two-way radios or headsets will be allowed.
TECHNICAL INSPECTION
Tech Officials will determine at the end of the race if or what should be inspected. If the rules for your division are not readily available and updated online, it will be your responsibility to bring a current set with you.
SCORING & TRANSPONDERS
Every competitor will be required to run a Transponder. Each competitor will also be responsible for making sure the Transponder is attached properly and that the Transponder is working during the pre-race test (which will be explained at tech). If you do not have a transponder, please borrow one! The track will have a limited amount of charged rental transponders available for rent ($25) at the Pit Ticket Booth on race day. They must be returned after the race! Further instructions and details will be provided at the pre-race pit meeting. At the end of the race, the top 10 positions will be unofficial until all timing & scoring has been reviewed. More information about the purse will follow in another post.
FUEL & HALFTIME PROCEDURES
There will be Sunoco Standard 110 Octane race fuel and 91 octane non-ethanol fuel available at the Speedway.
At the halfway point of the race, there will be a 20 min break which starts as soon as the final running car exits the track and pulls into its pit stall. A $500 prize will be awarded to the halfway leader. During this time, you are permitted to check fluids, maintenance of the car, and switch driver in a safe manner. You will NOT be allowed to make any type of tire adjustments. If a tire change or air pressure adjustment is required, that will only be permitted when the green flag flies at the start of the second half of the race. This will be a zero-tolerance policy.
The Speedway opens at 8 a.m. sharp on Saturday, and all vehicles must go through safety inspection prior to being allowed onto the Racetrack. Please get there early or take advantage of the early tech inspections on Friday, November 27th from 1pm to 5pm.
FINAL REMINDERS
If you don't know, ask! Contact Colorado National Speedway Tech: for more information!
