Thunderhill East,
re-solved live.
Willows, California · 4.60 km · 2.86 mi · counterclockwise
Open Thunderhill East 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 | 2:07.0 | 129.3 km/h |
| Liter bike | 2:06.3 | 130.0 km/h |
| 650 twin | 2:09.9 | 126.4 km/h |
Where the model brakes hardest
Longest simulated brake zones · Supersport 600 preset · estimates, not measured data
Turn 7
93 km/h · 58 mph in → 82 km/h · 51 mph min
Turn 11
146 km/h · 91 mph in → 102 km/h · 64 mph min
Turn 13
104 km/h · 65 mph in → 86 km/h · 54 mph min