This was a race that just had to be witnessed. It was 200 laps winner take all, $200 entry half to the track, half to the winner. If it ran you had to drive it off property, so infield grenades were spectacular. I wish I had pictures, but this was many years ago. Would love a track to do something like this again. It was glorious carnage. Often it was 200 cars on a 1/2 mile track.

ENDURO RULES

Any driver climbing out of car during the green flag will be disqualified. NO EXCEPTIONS!
The first car to complete the advertised laps is the winner.
Starting order will be discussed at the drivers meeting
The race will be started with 2 cars abreast
Cars will hold their position until the green flag is displayed.
The yellow flag will not be used. If there are cars with break downs or crashed, the other cars will avoid the while continuing the race.
The red flag will be displayed only if the track is blocked and racing cannot continue. All cars must stop once the red flag is displayed. The race will be restarted with the cars in the same position as before the red flag. Any car involved in the blockage that can continue may do so. No stalled car may be removed from track unless car poses a safety hazard and is directed by pit steward.
The flagman will indicate the middle of the race. The white flag will indicate the leader is on the last lap.
Each entry must provide a scorer. A special area will be reserved for the scorer where they can follow the instructions of the head scorer.
Driver changes are not allowed.
A mandatory meeting for all drivers and scorers will be held on race day. This meeting will be held before the Enduro race.
Race may be run either clockwise or counter-clockwise.
Entry fees are non refundable. If entry fee is sold to another party, Speedway office must be notified.
No 2-way radios or scanners allowed.
Rupture of gas tank and or loss of gasoline require immediate black flag.
Number will be in contrasting color to the car, at least 18” high painted on the door. Number color must be highly visible.
No gestures or symbols. No profanity allowed.
All cars must be inspected and in the infield area starting at 4:00 PM race day.
Enduro is open to licensed drivers only.
Cars with flat tires must leave the racing surface. Drivers who ignore this will be black flagged. Driving on rims will force Speedway to ban driver from any future Enduro races.

THE CAR AND BODY

1. Any sedan or station wagon is eligible. US made car.

2. Minimum stock wheelbase allowed 108”. No sub compacts allowed.

3. Driver protection bars are mandatory. They must remain within the “driver” area. At no time may they pass through any firewall.

4. Roll bars are OPTIONAL. The roll bar may not reinforce the body or frame or alter the geometry of the racer but serve only to hold the car off the driver when overturned as a safety measure. Cage 4 point only. Bumpers must be welded and chained to the body.

5. No bracing of any kind.

6. All doors must be welded, bolted or chained shut. Welds to be inspected.

7. All glass must be removed except for front windshield.

8. Seat belts and shoulder harnesses mandatory.

9. Complete metal firewall must seal the trunk area from the driver’s compartment.

10. Complete bumper to bumper steel unibody must be retained.

11. The stock steel unaltered floor pan, trunk floor and rear wheel wells must be retained. No sectioning, chopping or channeling allowed.

12. Cars must be strictly stock. No holes in the hood. Hood must be kept in place at all times. Body sheet metal must be kept in place at all times.

13. Headlights and taillights must be removed. All body side trim/ molding must be removed. All interior upholstery must be removed (back seat, headliner, door panels and carpet). Only accepted drivers seat is to remain.

14. All cars must have a windshield or Lexan windshield.

15. Gas tanks must be secured in trunk. Fuel cells ok, secured to trunk floor.

16. Battery may be relocated anywhere. Must be securely fastened and covered.

SUSPENSION

No modifying of suspension is allowed. Adjustments to stock mounting only for camber.
Suspension parts must remain absolutely stock for that make and model of car. No spacers, lumber or chains, etc. may be used to alter stock suspension of car.
TIRES AND WHEELS

All four tires must be the same size before, during and after the race.
Tires must be DOT Stock Passenger car tires or Light Truck tires. No fancy exotic gumball tires of any kind.
Maximum tire is 70 series or metric equivalent.
No grooving of tires.
Racing wheels or white spoke wheels allowed.
Wheel width maximum is eight (8) inches.
ENGINE

The engine must be strictly stock for that make and model in its original mounts. No factory high performance parts allowed.
Exhaust system must be factory stock for make and model back to rear or “Y” pipe. Muffler and tail pipe may not be removed. No after market headers of any type permitted.
Compression 150 pounds maximum. Must pull 15 inches of vacuum at 1000 rpm before and after the race. No racing cams regardless of vacuum at idle. Cam must be stock or stock replacement. No lopey idles.
CARBURETOR

One stock 2 barrel or one stock 4 barrel original carburetor only.
TRANSMISSION AND REAR END

Stock transmission and rear end only. No factory high performance equipment allowed. Limited slip and locked rear ends allowed.

MISCELLANEOUS

Approved seat belts and shoulder harnesses are mandatory.
Approved fire suit and helmet required.
Any loss of wheel requires your immediate stopping on the racetrack. We will not allow any track damage. Damage to grass or infield while displaying your temper will not be tolerated and will be cause for the black flag or disqualification.
Fire extinguisher and window nets MANDATORY.

https://skipo.tripod.com/2005endurorules.htm

Sounds like fun chaos

This looks like wat you’re describing. It would have been a blast to watch or drive.

https://youtu.be/oXnnl-sVLdI?si=lbKleZwEcr1bcAtk

That sounds like a very fun racing event to watch.