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Thunderhill Raceway Park
Free lap timer and live crew feed in Willows, California. Time laps with LapsHub.
Public leaderboard
No public lap times yet
Be early at this circuit. Download LapsHub free, time with phone GPS for your history and live crew feed, and stream the session to your paddock. Public boards fill in as approved rank-eligible laps are published.
- Download the free app
- Time with phone GPS (optional RaceBox for sharper GPS)
- Keep your crew live on the paddock feed
- Chase approved public times when you are ready
About Thunderhill Raceway Park
3.038-mile Northern California road course complex
- 3.038 mi
- 16 turns
- Opened 1993
- Willows, California
Thunderhill Raceway Park is a 3.038-mile, 16-turn layout near Willows, California. Opened in 1993, it is a hub for club racing and 25-hour endurance events.
The 3.038-mile, 16 turns layout rewards smooth inputs and track knowledge, a lap that improves once you learn the braking markers and apexes.
Thunderhill Raceway Park is on the North American track-day calendar. Record laps in the LapsHub app with phone GPS or RaceBox telemetry. Times upload automatically so you can chase a public leaderboard.
Notable features
- 25 Hours of Thunderhill: One of the longest endurance races in the world runs here.
- West Loop: A popular 3-mile configuration with 15 turns.
- Willows, California: A Northern California club-racing hub between Sacramento and the coast.
Live at Thunderhill Raceway Park
Live telemetry and video from the circuit
When drivers are on track at Thunderhill Raceway Park, LapsHub sends live lap times, GPS traces, and session data to the paddock feed. A low-latency live telemetry stream sends lap times, GPS, and session data to the paddock feed and the cloud while you drive. Live video feeds during track days and events let paddock crews and fans follow the action from the circuit or from anywhere.
- Live timing map shows who is on track, current lap times, and speeds as they happen
- Live video during track days and events, follow the action from the paddock or from home
- Phone GPS and RaceBox sessions both stream through the same live-event feed
Track day guide
How to time Thunderhill Raceway Park with LapsHub
Thunderhill Raceway Park is a 3.038-mile, 16-turn layout near Willows, California. Opened in 1993, it is a hub for club racing and 25-hour endurance events.
Download LapsHub free before you leave the paddock. Select Phone GPS for personal laps and live crew views. Pair a RaceBox when you want 25 Hz GPS. Follow organizer rules, including HPDE mode when clocks should stay off the Drive screen. See the HPDE lap timing guide for how to enable it.
- 25 Hours of Thunderhill: One of the longest endurance races in the world runs here.
- West Loop: A popular 3-mile configuration with 15 turns.
- Willows, California: A Northern California club-racing hub between Sacramento and the coast.
FAQ
Thunderhill Raceway Park lap timing FAQ
Can I time laps at Thunderhill Raceway Park with my phone?
Yes. Download LapsHub free, pick Phone GPS, and time at Thunderhill Raceway Park. Keep your crew live and review history after you park.
Is LapsHub free for Thunderhill Raceway Park?
Yes. Phone GPS lap timing, crew live views, and coaching tools do not require a paid plan.
Where is Thunderhill Raceway Park?
Thunderhill Raceway Park is listed in the LapsHub catalog for Willows, California. Track length: 3.038 mi.
Do phone laps appear on the public leaderboard?
Phone sessions are for live-event views and your history. Public boards show approved rank-eligible laps. Download free either way.
Free lap timer
Time your next day at Thunderhill Raceway Park free
No public board yet. Be early: download LapsHub free, time with phone GPS, and keep your crew live. Optional RaceBox for 25 Hz GPS when you want sharper data.