Track guide · Preview · 3 of 14 corners open

Sonoma Raceway

Sonoma, California · 3.81 km · 2.37 mi · clockwise

Sonoma Raceway, California, is covered here as the Motorcycle Course: a 3,810 m (2.37 mi) clockwise lap with 14 cards on the turn sheet, ending in the Turn 12 kink onto the front straight. The layout climbs hard at the start — Turn 1 alone gains 16.9 m (55 ft) — and gives it back through Turn 4 and the Carousel. The simulated profile has fast zones at Turns 1, 5 and 10, where the reference line never drops below 135 km/h (84 mph), and two slow ones, the Turn 7 hairpin at 62 km/h (39 mph) and the Turn 11A hairpin at 39 km/h (24 mph). Simulated lap times run 1:42.65 (liter bike) to 1:45.23 (middleweight twin). Every figure on this page is a physics-simulation estimate.

All figures: physics-simulation estimates · generated 2026-10-02 · methodology & assumptions

COMPUTED LINE · SONOMA RACEWAY SIM
Sonoma Raceway track map with computed racing line
2.37 MI
Lap
14
Corners
258 FT
Climb

Track outline © OpenStreetMap contributors (ODbL)

Sonoma Raceway — quick facts

Motorcycle track guide · simulation estimates · 2026-10-02

  • Layout: Motorcycle Course — 3,810 m (2.37 mi), run clockwise, 14 turn cards
  • Simulated lap times: 1:42.65 (liter bike), 1:43.21 (supersport 600), 1:45.23 (middleweight twin)
  • Simulated average speeds: 127.7–130.9 km/h (79–81 mph) depending on bike class
  • Slowest simulated point: Turn 11A hairpin, 10.1 m effective radius, 39 km/h (24 mph) minimum
  • Fastest simulated corner minimum: Turn 1, 145 km/h (90 mph) through a 138.9 m radius, with Turn 5 a fraction behind at 144 km/h (90 mph)
  • Biggest climb in a corner: Turn 1, gaining 16.9 m (55 ft) over 252 m
  • Biggest drop in a corner: Turn 6 Carousel, falling 14.6 m (48 ft) over 309 m
  • Longest simulated brake zone: 135 m for the liter bike into the Turn 7 hairpin

Turn 1

Left252 m arc
EntryMinExitBrake startEff. radiusElev Δ
175 km/h109 mph145 km/h90 mph152 km/h94 mph51 m167 ft139 m456 ft+16.9 m+55 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

This corner's walkthrough is in the all-access pack — along with the other 10 locked corners on this track.

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Turn 2

Right147 m arc
EntryMinExitBrake startEff. radiusElev Δ
113 km/h70 mph84 km/h52 mph145 km/h90 mph39 m128 ft47 m155 ft+10.2 m+33 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

This corner's walkthrough is in the all-access pack — along with the other 10 locked corners on this track.

Unlock every corner · $59 lifetime →

Turn 3

Left87 m arc
EntryMinExitBrake startEff. radiusElev Δ
130 km/h81 mph108 km/h67 mph120 km/h74 mph51 m167 ft78 m257 ft+4.6 m+15 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

This corner's walkthrough is in the all-access pack — along with the other 10 locked corners on this track.

Unlock every corner · $59 lifetime →

Turn 3A

Right93 m arc
EntryMinExitBrake startEff. radiusElev Δ
113 km/h70 mph99 km/h61 mph138 km/h86 mph15 m49 ft65 m213 ft+2.4 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

This corner's walkthrough is in the all-access pack — along with the other 10 locked corners on this track.

Unlock every corner · $59 lifetime →

Turn 4

Right111 m arc
EntryMinExitBrake startEff. radiusElev Δ
98 km/h61 mph68 km/h42 mph126 km/h78 mph57 m187 ft30 m99 ft-10.9 m-36 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

This corner's walkthrough is in the all-access pack — along with the other 10 locked corners on this track.

Unlock every corner · $59 lifetime →

Turn 5

Right177 m arc
EntryMinExitBrake startEff. radiusElev Δ
151 km/h94 mph144 km/h90 mph171 km/h106 mph6 m20 ft137 m449 ft-4.2 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

This corner's walkthrough is in the all-access pack — along with the other 10 locked corners on this track.

Unlock every corner · $59 lifetime →

Turn 6 — Carousel

Left309 m arc
EntryMinExitBrake startEff. radiusElev Δ
124 km/h77 mph99 km/h62 mph162 km/h100 mph69 m226 ft65 m213 ft-14.6 m-48 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

This corner's walkthrough is in the all-access pack — along with the other 10 locked corners on this track.

Unlock every corner · $59 lifetime →

Turn 7 — Hairpin

Right231 m arc
EntryMinExitBrake startEff. radiusElev Δ
113 km/h70 mph62 km/h39 mph106 km/h66 mph111 m364 ft26 m84 ft+3.6 m+12 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 Turn 7 hairpin is where the simulation posts its longest brake zone. A 231 m right on a 25.7 m effective radius, rising 3.6 m (12 ft), it is approached at 113 km/h (70 mph) with the brakes on from 111 m out on the supersport 600, 135 m on the liter bike, and 81 m on the twin. Minimum speed drops to 62 km/h (39 mph), the third-slowest point on the lap. The exit is 106 km/h (66 mph) for the two larger bikes and 105 km/h (65 mph) for the twin — below the entry speed, because the reference line is still turning when the esses arrive.

Turn 8 — Esses

Left78 m arc
EntryMinExitBrake startEff. radiusElev Δ
116 km/h72 mph113 km/h70 mph154 km/h96 mph3 m10 ft84 m276 ft-2.8 m-9 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

This corner's walkthrough is in the all-access pack — along with the other 10 locked corners on this track.

Unlock every corner · $59 lifetime →

Turn 8A

Left66 m arc
EntryMinExitBrake startEff. radiusElev Δ
139 km/h86 mph119 km/h74 mph134 km/h83 mph36 m118 ft94 m308 ft-2.4 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

This corner's walkthrough is in the all-access pack — along with the other 10 locked corners on this track.

Unlock every corner · $59 lifetime →

Turn 9A — Chicane

Right141 m arc
EntryMinExitBrake startEff. radiusElev Δ
116 km/h72 mph55 km/h34 mph113 km/h70 mph96 m315 ft20 m65 ft-2.0 m-7 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 chicane is the Motorcycle Course's bike-specific right at the end of the esses: 141 m on a 19.8 m effective radius, falling 2 m (7 ft). The reference line approaches at 116 km/h (72 mph) and brakes from 96 m out on the supersport 600, 111 m on the liter bike, and 75 m on the twin, the second-longest zone of the lap. Minimum speed is 55 km/h (34 mph), the second-slowest point on the circuit. The exit is 113 km/h (70 mph) for the two larger classes and 111 km/h (69 mph) for the twin, effectively back to the entry speed as the line straightens toward Turn 10.

Turn 10

Right165 m arc
EntryMinExitBrake startEff. radiusElev Δ
145 km/h90 mph135 km/h84 mph166 km/h103 mph0 m0 ft120 m393 ft-1.2 m-4 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

This corner's walkthrough is in the all-access pack — along with the other 10 locked corners on this track.

Unlock every corner · $59 lifetime →

Turn 11A — Hairpin

Right78 m arc
EntryMinExitBrake startEff. radiusElev Δ
77 km/h48 mph39 km/h24 mph106 km/h66 mph87 m285 ft10 m33 ft+0.2 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

The Turn 11A hairpin is the slowest point on the lap and its tightest radius: 78 m of arc on a 10.1 m effective radius, flat at +0.2 m. The reference line arrives at just 77 km/h (48 mph) because the braking starts well back — 87 m before turn-in for the supersport 600, 90 m for the liter bike, 81 m for the twin — and bottoms at 39 km/h (24 mph). The exit builds to 106 km/h (66 mph) on the two larger classes and 104 km/h (65 mph) on the twin, launching the run through Turn 12 onto the front straight.

Turn 12

Left3 m arc
EntryMinExitBrake startEff. radiusElev Δ
102 km/h63 mph102 km/h63 mph106 km/h66 mph0 m0 ft241 m792 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

This corner's walkthrough is in the all-access pack — along with the other 10 locked corners on this track.

Unlock every corner · $59 lifetime →