TENTHS
Willows, California

Thunderhill Raceway Park (West Course)

West Course · 2660 m · 10 corners · reference lap 1:20.74 (supersport 600, simulation estimate)

The reference below is a minimum-lap-time motorcycle line solved on this circuit's verified bike layout and measured track width, with speeds from a quasi-steady-state motorcycle model. It is a ceiling under ideal assumptions — use it to see where your headroom lives, then drop your own session file to measure yours.

Where the lap is won

Three places to look first

Biggest braking event

Turn 7W: 118.6 → 45.3 km/h over 57.0 m. Brake-point consistency here is worth more than anywhere else on the lap.

Commitment corner

Turn 6W: reference minimum 112.0 km/h. Fast corners punish hesitation — min-speed spread here is the classic amateur time leak.

Slowest corner

Turn 7W: 45.3 km/h minimum. Exit drive from here sets the following straight — spread on the exit costs the whole next sector.

Reference corner data — simulation estimates, km/h
CornerNameEntryMinExitBrake, m
T1W 120.7 94.0 114.5 12.0
T2W 97.9 88.3 140.1 33.0
T3W 124.0 89.6 111.6 75.0
T4W 124.8 89.9 117.5 27.0
T5W 143.1 107.7 131.9 12.0
T6W 125.0 112.0 136.0 45.0
T7W 118.6 45.3 81.5 57.0
T8W 77.0 77.0 127.3 81.0
T9W 75.0 52.1 99.6 54.0
T10W 99.6 55.1 120.4 15.0

The browser engine re-solves only the speed profile on this fixed line for the selected bike class.

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