Times every lap from your phone's GPS, with your best and last lap in big digits on the dash.
Lapforge: Track Day Lap TimerTimes every lap from your phone's GPS, with your best and last lap in big digits on the dash.
Thunderhill Raceway Park track map
The layout of Thunderhill Raceway Park, drawn from its OpenStreetMap outline with north at the top, and a lap length of 4.58 mi (7.37 km).
Time your laps at Thunderhill Raceway Park
Lapforge knows Thunderhill Raceway Park: when you arrive, it recognizes the track from your phone's GPS and draws this outline on the timing screen with your position on it.
Press GO, tap Set start line as you cross the line on your first lap, and Lapforge saves that line for every visit. Each lap after is timed from GPS, placed between two GPS readings rather than rounded to the next one. Lap timing and your lap history are free, with no account.
Tracks near Thunderhill Raceway Park
- Silver Dollar Speedway 30 mi away
- Marysville Raceway 50 mi away
- Shasta Kart Klub 67 mi away
- Calistoga Speedway 67 mi away
- Blue Max Kart Club 74 mi away
- All American Speedway 78 mi away
Track data © OpenStreetMap contributors, ODbL. Download the circuit data. Lengths are measured along the mapped racing surface.