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.
Sonoma Raceway track map
The layout of Sonoma Raceway, drawn from its OpenStreetMap outline with north at the top, and a lap length of 2.56 mi (4.13 km).
Time your laps at Sonoma Raceway
Lapforge knows Sonoma Raceway: 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 Sonoma Raceway
- Calistoga Speedway 30 mi away
- Blue Max Kart Club 49 mi away
- Altamont Speedway 57 mi away
- ATV Track 62 mi away
- 110 cc Track 63 mi away
- Stockton Dirt Track 67 mi away
Track data © OpenStreetMap contributors, ODbL. Download the circuit data. Lengths are measured along the mapped racing surface.