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Event Details

Thunderhill Raceway Park, Willows CA

May 31 - Jun 1, 2025 / Entry Deadline: May 10, 2025
The 25:01 2025 (Full 25 Hrs)

Schedule & Info

Schedule & Info

SPECTATORS
All-access / all-weekend spectator pass is $40 (click here); spectator pass covers race days and pre-race test & inspection day. Spectators have full paddock access but DO NOT have hot-pit access. Spectators are not allowed to touch a race car—anyone wrenching, fueling, etc. needs to register on a team as a crew member.

SCHEDULE
Full 25-hour + 1-minute race with no breaks, using Thunderhill's original 3-mile circuit and original CCW direction. 

Pre-Race
All rookies must watch the Virtual Rookie Meeting

Thursday, 29 May 2025
5:30pm: Gates open for early arrivals
10pm: Gate registration close (no armband, no entry,)

Friday, 30 May 2025
7am: Gate registration open
TBA: Optional Friday Test Day
Noon-5pm: BS & Tech at the track. Teams are assigned specific tech times. You'll get yours by email before the race. That's your time: No changes. 
Noon-5pm: Gear tech
TBA: Mandatory Light Tech (no assigned times, just come within the time frame)
TBA: Track walk is only allowed after track cleaning has been completed, so listen for announcements: DO NOT go on track without clear staff approval. No motorized vehicles, careful bicycles ok.
9pm: Gate registration close (no armband, no entry)

Saturday, 31 May 2025
7am: Gate registration open
10am: Mandatory drivers meeting
10:30am: Grid time--show up soon!
11am: Race start
7pm: Gate registration close (no armband, no entry)

Sunday, 1 June 2025
7am: Gate registration open
12:01pm: Checkered flag
1pm: Award ceremony
5pm: Ray Mudd returns to kick some ass (and honestly, we get it).

LIGHTING
-All car numbers must be illuminated.
-Other identifying / unique lighting is encouraged.
-On level ground from 25 feet away, forward-facing lights must have a hard cutoff at 40" or less above groundThis requirement will be tested onsite.
-A 40" cutoff is extremely hard to achieve with lightbars. We strongly recommend individually lensed lighting instead.
-No forward-facing light may be higher than the car’s OE headlights (as delivered new).
-Use only enough lighting to see clearly! Overly bright / dazzling lighting is hard on other drivers and will get you black-flagged.
-Reports of atypically dazzling lights should be taken directly to race control in the tower. Community policing is strongly encouraged!
-This is a night race on an unlit track. Each team must provide its own illumination. The hot pits/fueling area is lit and there is also lighting in the carports. The rest of the paddock is unlit.
-During daylight hours, forward lights may be removed.
-Lights, mounts, switches, wiring, etc. DO NOT count towards the $500 total.
-From dusk to dawn, all cars must have at least two working headlights, one working taillight, one working brake light, and all numbers illuminated.

PARKING/PADDOCK/FACILITIES
•Parking is first-come first-served unless reserved parking is specifically mentioned by Lemons or offered by the track. 
•Every team entry (ie, one racecar) gets a single 20x40' space in the main paddock. Anything that doesn't fit in that box (big rigs, large RVs, extra cars) must park in the spectator/overflow parking area shown on the Paddock Map.
•Race control is off-limits to participants and spectators.

PARTICIPANT ARRIVAL / CHECK-IN / TECH
•All participants must be pre-registered.
•Check the Paddock Map to see where stuff's located.
•Check the Event Schedule to know when stuff happens. 
•GO TO DRIVER-GEAR TECH (near HQ or Tech) ANYTIME during Tech hours. (PUT ON AND WEAR your full safety gear, including the head/neck restraint--don't make us dig through some sweaty-ass gear bag)
•GO TO DRIVERS-LICENSE CHECK (at HQ) ANYTIME during Tech hours. Show your valid, current, unrestricted street license to receive the required Lemons Driver wristband. (Legit hard cards only--insurance requires us not to accept photos or copies.)
•GO TO CAR TECH AT YOUR ASSIGNED TECH TIME. Bring your car and COMPLETED tech sheet; assigned Tech times are linked from the Event Schedule one week before the event. 

FUELING
•Fueling only in hot pits (or track's permanent pumps where provided).
No fueling in paddock during the race.
•Everyone in fueling area must be in full safety gear.
•Registered drivers & crew only in fueling area--no spectators.
•No staging: Bring your supplies, fuel up, then take everything away again.
•No assigned or saved hot-pit spots.
•Don't park support vehicles near the fuel area.
•Kill switch off; no one in car; drip pan; dedicated extinguisher person are all mandatory while fueling.
•Only fueling, driver change, windshield cleaning, and cool-suit ice changes allowed in the hot pit. For everything else (tire pressure, fluid checks, engine swaps) go to the paddock.
•If using track pumps, no one can be in the car and kill switch must be off.
•If using track pumps, full gear recommended but not required.
•Using the track pumps means using the track pumps--your own fuel or jugs aren't allowed there.

Pits and Paddock

Pits and Paddock

PADDOCK SPACE IS LIMITED: Every team entry (ie, one racecar) gets a single 20x40' space in the main paddock. Anything that doesn't fit in that box (big rigs, large RVs, extra cars) must park in the spectator/overflow parking area shown on the Paddock Map.
OVERNIGHT CAMPING: One camping fee (paid in the team's online reg) covers overnight dry camping for all team members
ELECTRICAL HOOKUPS: Limited. First come, first served
GARAGES: None
CARPORTS: First come, first served
FUEL SOLD ON-SITE: Yes
PADDOCK SPEED LIMIT: 10 mph
NO FIREARMS OR FIREWORKS
NO DRONES ALLOWED
NO STAND-UP SCOOTERS
PADDOCK VEHICLES MUST BE LIT AT NIGHT


ADDITIONAL TRACK-SPECIFIC RULES
GRILLS/FIRES:
Consult track website for specific rules
SOUND LIMIT: Strictly enforced by track at 103db
SPECIAL PADDOCK VEHICLE RULES: No ATVs, motorcycles, or other motorized vehicles off pavement
FUEL DROP FEE: Thunderhill charges a drop fee for bringing in 55-gallon or larger containers--inquire with track before bringing large fuel containers onsite
WASTE OIL: Recycle at marked stations near fuel pump; all other used fluids must be taken away by teams

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