//CIRCUIT GUIDE//thunderhill
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LENGTH: 3.00 Miles (East Course) / 5.00 Miles Combined|TURNS: 15 Complex Corners|LAP RECORD: 1:36.40 (NASA 25 Hours of Thunderhill)|SOUND: 103dB
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SANCTIONED ROAD COURSEWillows, California
Thunderhill Raceway Park
Home of the legendary 25 Hours of Thunderhill. Famous for sweeping elevation, the blind downhill launch of the Cyclone, and high-speed multi-car passing.
COURSE LENGTH3.00 Miles (East Course) / 5.00 Miles Combined
TURNS15 Turns
LAP RECORD1:36.40 (NASA 25 Hours of Thunderhill)
SOUND LIMIT103dB
TRK-GUIDE
Reference Benchmark (Vehicle & Tire Dependent - Always Adjust for Conditions & Run Group)Turn-by-Turn Racing Line & Braking Zones
Turn 14th Gear · 96 MPH
Fast Entry Left
High speed approach off front straight into blind left apex.
Turn 52nd/3rd Gear · 54 MPH
The Cyclone
Steep uphill climb followed by blind crest plunge to the right.
Turn 84th Gear · 112 MPH
Fast High-Speed Left
Flat-out commitment sweeper carrying momentum to back infield.
Turn 14-153rd Gear · 72 MPH
Final Complex
Double apex right onto front straight toward timing tower.
Verified In-Car Onboards at Thunderhill Raceway Park
205 SESSIONSClick any session to launch high-bitrate onboard video with AiM/Garmin HUD overlay in our broadcast player modal.
VERIFIED ONBOARD@boomboomtisk
OnGrid
GoPro 4K Cockpit POV + GPS Data
18:25
JUST THE DRIVES: THUNDERHILL WEST CCW 1:31.687 Lap B16A2 EK Honda Civic Hatchback + RAW SESSIONS
@boomboomtisk·Honda Civic (K-Series Club Racing)
Watch in ModalYouTube
VERIFIED ONBOARD@Ken Moto
Independent
GoPro 4K Cockpit POV + GPS Data
5:21
First Laps on Thunderhill East's New Surface (POV)
@Ken Moto·Grassroots Production Track Build
Watch in ModalYouTube
VERIFIED ONBOARD@Alex Tanaka - AVOENG.
Independent
GoPro 4K Cockpit POV + GPS Data
7:10
Thunderhill West | GLA 45 vs ND1/ND2 Miata vs F84 M4 | Comparison Laps
@Alex Tanaka - AVOENG.·BMW M3 / M4
Watch in ModalYouTube
VERIFIED ONBOARD@TrackDaz
Independent
GoPro 4K Cockpit POV + GPS Data
4:26
🏁 A-Group traffic at Thunderhill Raceway Park gets REAL! 🏍️🔥
@TrackDaz·Grassroots Production Track Build
Watch in ModalYouTube
VERIFIED ONBOARD@Jubbal & Cars Shorts
Independent
GoPro 4K Cockpit POV + GPS Data
0:57
3,980 LBS on Track: Can a BMW M4 Hide Its Weight?
@Jubbal & Cars Shorts·BMW M3 / M4
Watch in ModalYouTube
VERIFIED ONBOARD@MaxDrives
Independent
GoPro 4K Cockpit POV + GPS Data
1:32
BMW E36 1:22.409 LAP THUNDERHILL WEST
@MaxDrives·BMW M3 / M4
Watch in ModalYouTube
VERIFIED ONBOARD@SeanS54
Independent
GoPro 4K Cockpit POV + GPS Data
6:08
Thunderhill East Bypass - NEW PAVEMENT - BMW E92 M3
@SeanS54·BMW M3 / M4
Watch in ModalYouTube
VERIFIED ONBOARD@boomboomtisk
OnGrid
GoPro 4K Cockpit POV + GPS Data
44:00
HONDA FIT FRIENDLY FIRE | Thunderhill WEST FEST with On Grid Track
@boomboomtisk·Grassroots Production Track Build
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VERIFIED ONBOARD@Jubbal & Cars Shorts
Independent
GoPro 4K Cockpit POV + GPS Data
0:49
How Fast Does a 700 WHP M4 xDrive Run Thunderhill East?
@Jubbal & Cars Shorts·BMW M3 / M4
Watch in ModalYouTube
VERIFIED ONBOARD@MERGESORTRACING
Independent
GoPro 4K Cockpit POV + GPS Data
1:35
Thunderhill West CW || BMW E46 M3 || 1:24.041 Lap || Personal Best
@MERGESORTRACING·BMW M3 / M4
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VERIFIED ONBOARD@Alex Tanaka - AVOENG.
Independent
GoPro 4K Cockpit POV + GPS Data
1:39
Thunderhill West 1:20.6 | A90 GR Supra
@Alex Tanaka - AVOENG.·Toyota GR Supra (A90)
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VERIFIED ONBOARD@MaxDrives
Independent
GoPro 4K Cockpit POV + GPS Data
1:35
E36 M3 1:23.95 LAP THUNDERHILL WEST
@MaxDrives·BMW M3 / M4
Watch in ModalYouTube