Buttonwillow, California · 4.46 km · 2.77 mi · clockwise
Buttonwillow Raceway Park in Buttonwillow, California, is charted here on Race #13 Clockwise (Classic), the configuration track-day organizers and AFM run for motorcycles: 4,459 m (2.77 mi), 19 numbered turns on the organizer card — eleven rights, eight lefts — and no corner rising or falling more than 0.3 m. Turn 2 and Off Ramp are the slow point, both bottoming at 59 km/h (37 mph); Club Corner through Lost Hill is a chain of long-radius arcs with minimums of 152–188 km/h (95–117 mph). Turns 8, 15, 17 and 18 show no braking in any class. Simulated lap times run 99.1 s on a liter bike to 103.3 s on a 650 twin, averaging 153–160 km/h (95–99 mph). Every figure here is a physics-simulation estimate, not measured data.
Length: 4,459 m (2.77 mi), run clockwise on Race #13 Clockwise (Classic)
19 numbered turns on the organizer card; 11 right-handers, 8 left-handers
Elevation: effectively flat — no corner rises or falls more than 0.3 m
Fastest point (simulation estimate): Turn 18 kink, 233 km/h (145 mph) on a supersport 600 and 245 km/h (152 mph) on a liter bike, no braking
Slowest corners (simulation estimate): Turn 2 and Turn 3 (Off Ramp), 59 km/h (37 mph) minimum
Simulated lap times: 99.1 s (liter bike), 100.3 s (supersport 600), 103.3 s (650 twin)
Simulated lap average: 153–160 km/h (95–99 mph) depending on class
Turn 1 — Sunrise
Left225 m arc
Entry
Min
Exit
Brake start
Eff. radius
Elev Δ
140 km/h87 mph
117 km/h73 mph
159 km/h99 mph
108 m354 ft
90 m295 ft
+0.3 m+1 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
Sunrise is a long left of 90 m effective radius held for 225 m, the longest arc in the first half of the lap, rising a negligible 0.3 m. In the simulation the supersport 600 begins braking 108 m before the corner, arrives at 140 km/h (87 mph), settles to a 117 km/h (73 mph) minimum and drives out at 159 km/h (99 mph). The liter bike brakes 147 m out for the same entry and minimum; the 650 twin brakes just 72 m out and exits at 157 km/h (98 mph). The radius sets the floor, so all three classes share the apex speed.
Turn 2
Right45 m arc
Entry
Min
Exit
Brake start
Eff. radius
Elev Δ
84 km/h52 mph
59 km/h37 mph
61 km/h38 mph
78 m256 ft
23 m76 ft
+0.1 m+0 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 15 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 15 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 15 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 15 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 15 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 15 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 15 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 15 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 15 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 15 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 15 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 15 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 15 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 15 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
Sweeper is the heaviest braking zone on the lap, a 234 m right-hand arc on a 66.2 m effective radius at the end of the fastest straight. The 600 starts braking 111 m out, the liter bike 123 m, the twin 87 m, all arriving at the corner boundary at 121 km/h (75 mph) with most of the speed already gone. The minimum is 100 km/h (62 mph), the lowest reading since Cotton Corners, and the exit is 133 km/h (83 mph) on the four-cylinders and a near-identical figure on the twin, feeding into the Esses. The long arc is where the classes are most alike.
Turn 17 — Esses
Right39 m arc
Entry
Min
Exit
Brake start
Eff. radius
Elev Δ
133 km/h83 mph
133 km/h83 mph
156 km/h97 mph
0 m0 ft
160 m524 ft
+0.0 m+0 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 15 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 15 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
Sunset is the left that closes the lap onto the front straight: 156 m on an 83.5 m effective radius, flat. The brake marks are long — 129 m on the 600, 156 m on the liter bike, 87 m on the twin — because they begin from the Turn 18 speeds; all three arrive at 132 km/h (82 mph) and bottom at 113 km/h (70 mph). The exit is 151 km/h (94 mph) on the four-cylinders and 147 km/h (91 mph) on the twin, carried across the line. Lap time works out to 99.1 s on the liter bike, 100.3 s on the 600 and 103.3 s on the twin.
