Willows, California · 7.34 km · 4.56 mi · counterclockwise
Thunderhill Raceway Park's Full Course in Willows, California links 29 numbered corners over 7,339 m (4.56 mi) run counterclockwise. Elevation in the source data spans 83 m to 123.3 m — roughly a 40 m (132 ft) working range — with 96.3 m of cumulative gain per lap. The simulated speed profile splits the lap cleanly: the fast stretch runs from Turn 8, where the model's minimum never drops below 147 km/h (92 mph), through the quick Turn 15 and Turn 27 arcs at 133 km/h (83 mph) and 129 km/h (80 mph) minimums. The slow business sits in the Turn 5–6 complex (66 km/h / 41 mph minimum), the climbing Turn 10–11 pairing, and above all the Turn 17–19 cluster, where simulated minimums fall to about 52 km/h (32 mph) — the slowest points on the circuit. Simulated lap times range from 3:23.3 on a liter bike to 3:30.0 on a middleweight twin. All figures on this page are physics-simulation estimates.
Simulated average lap speed: 125.7–129.9 km/h (78–81 mph) depending on bike class
Location: Willows, California
Turn 1
Left144 m arc
Entry
Min
Exit
Brake start
Eff. radius
Elev Δ
152 km/h95 mph
115 km/h71 mph
144 km/h89 mph
117 m384 ft
87 m287 ft
+2.3 m+8 ft
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The lap opens with a left of 87.4 m effective radius that climbs 2.3 m over its 144 m length. In the simulation, a supersport 600 arrives at 152 km/h (94 mph), begins braking 117 m before the corner, and carries a 115 km/h (71 mph) minimum before releasing to 144 km/h (89 mph) at the exit. The interesting spread here is braking distance by class: the model has the liter bike on the brakes from 165 m out — the extra straight-line speed it builds costs it stopping distance — while the middleweight twin needs only 72 m. Minimum speed is identical across all three classes, since it is set by radius and grip rather than power. All figures are simulation estimates.
Turn 2
Left321 m arc
Entry
Min
Exit
Brake start
Eff. radius
Elev Δ
152 km/h94 mph
112 km/h70 mph
145 km/h90 mph
57 m187 ft
83 m273 ft
-3.4 m-11 ft
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library. The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library.
This corner's walkthrough is in the all-access pack —
along with the other 25 locked corners on this track.
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library. The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library.
This corner's walkthrough is in the all-access pack —
along with the other 25 locked corners on this track.
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library. The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library.
This corner's walkthrough is in the all-access pack —
along with the other 25 locked corners on this track.
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library. The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library.
This corner's walkthrough is in the all-access pack —
along with the other 25 locked corners on this track.
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library. The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library.
This corner's walkthrough is in the all-access pack —
along with the other 25 locked corners on this track.
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library. The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library.
This corner's walkthrough is in the all-access pack —
along with the other 25 locked corners on this track.
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library. The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library.
This corner's walkthrough is in the all-access pack —
along with the other 25 locked corners on this track.
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library. The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library.
This corner's walkthrough is in the all-access pack —
along with the other 25 locked corners on this track.
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library. The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library.
This corner's walkthrough is in the all-access pack —
along with the other 25 locked corners on this track.
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library. The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library.
This corner's walkthrough is in the all-access pack —
along with the other 25 locked corners on this track.
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library. The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library.
This corner's walkthrough is in the all-access pack —
along with the other 25 locked corners on this track.
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library. The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library.
This corner's walkthrough is in the all-access pack —
along with the other 25 locked corners on this track.
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library. The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library.
This corner's walkthrough is in the all-access pack —
along with the other 25 locked corners on this track.
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library. The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library.
This corner's walkthrough is in the all-access pack —
along with the other 25 locked corners on this track.
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library. The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library.
This corner's walkthrough is in the all-access pack —
along with the other 25 locked corners on this track.
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library. The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library.
This corner's walkthrough is in the all-access pack —
along with the other 25 locked corners on this track.
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library. The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library.
This corner's walkthrough is in the all-access pack —
along with the other 25 locked corners on this track.
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library. The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library.
This corner's walkthrough is in the all-access pack —
along with the other 25 locked corners on this track.
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library. The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library.
This corner's walkthrough is in the all-access pack —
along with the other 25 locked corners on this track.
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library. The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library.
This corner's walkthrough is in the all-access pack —
along with the other 25 locked corners on this track.
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library. The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library.
This corner's walkthrough is in the all-access pack —
along with the other 25 locked corners on this track.
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library. The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library.
This corner's walkthrough is in the all-access pack —
along with the other 25 locked corners on this track.
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library. The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library.
This corner's walkthrough is in the all-access pack —
along with the other 25 locked corners on this track.
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library. The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library.
This corner's walkthrough is in the all-access pack —
along with the other 25 locked corners on this track.
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library. The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library.
This corner's walkthrough is in the all-access pack —
along with the other 25 locked corners on this track.
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library. The full walkthrough for this corner — braking references, the shape of the entry, what the elevation does to the bike mid-corner, and how the three bike classes differ on the way out — is part of the all-access guide. The complete corner-by-corner text unlocks with the pack, together with the printable guide and the CSV corner tables for every circuit in the library.
This corner's walkthrough is in the all-access pack —
along with the other 25 locked corners on this track.
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The penultimate corner starts the downhill run to the line: 261 m of right-hand arc at 36.6 m effective radius, descending 4.3 m. The simulation shows its longest braking zones of the closing sector — 120 m for the supersport 600 and a full 153 m for the liter bike — from a 122.1 km/h (76 mph) entry down to a 74.5 km/h (46 mph) minimum. Those long zones on a modest entry speed again trace to the downhill grade, which the model charges against braking performance. The exit builds to 134 km/h (83 mph) as the track keeps falling. Every value is a physics-simulation estimate.
Turn 29
Right261 m arc
Entry
Min
Exit
Brake start
Eff. radius
Elev Δ
122 km/h76 mph
74 km/h46 mph
134 km/h83 mph
120 m394 ft
37 m120 ft
-4.3 m-14 ft
Supersport 600 preset · simulation estimates · liter-bike and 650-twin figures for every corner ship in the all-access pack · how these are computed
The final corner shares Turn 28's numbers exactly in the source data — 36.6 m effective radius, 261 m length, 4.3 m of descent, a 74.5 km/h (46 mph) minimum, and a 133.7 km/h (83 mph) exit — the last of the lap's mirrored pairs, treated by the model as one continuous double-right onto the front straight. From this exit the simulation completes the 7,339 m lap in 205.0 seconds (3:25.0) on a supersport 600, 203.3 seconds (3:23.3) on a liter bike, and 210.0 seconds (3:30.0) on a middleweight twin, averaging 125.7–129.9 km/h (78–81 mph). All lap and corner figures are physics-simulation estimates.
