Buttonwillow Raceway Park (The Circuit),
re-solved live.
Buttonwillow, California · 4.17 km · 2.59 mi · clockwise
Open Buttonwillow Raceway Park (The Circuit) in the Racing Line Lab and the browser re-solves the speed profile on the computed racing line as you change bike class, mass, power and grip. Every figure below is a simulation estimate on OpenStreetMap-derived geometry — not a measured lap.
The map and these reference laps are free in the Lab; live solving on this track unlocks with the $29 lifetime all-tracks pass.
Track outline © OpenStreetMap contributors (ODbL)
Reference simulated laps
Stock bike-class presets · warm sport tires, dry track · simulation estimates
| Preset | Sim lap | Avg speed |
|---|---|---|
| Supersport 600 | 1:48.0 | 137.0 km/h |
| Liter bike | 1:46.6 | 138.9 km/h |
| 650 twin | 1:51.7 | 132.6 km/h |
Where the model brakes hardest
Longest simulated brake zones · Supersport 600 preset · estimates, not measured data
Turn 7
105 km/h · 65 mph in → 84 km/h · 52 mph min
Turn 1
130 km/h · 81 mph in → 89 km/h · 55 mph min
Turn 5
124 km/h · 77 mph in → 103 km/h · 64 mph min