Streets of Willow Springs (Counter-clockwise)
Rosamond, California · 2.51 km · 1.56 mi · counterclockwise
Streets of Willow Springs in Rosamond, California is covered here run counter-clockwise — the clockwise course reversed — with the 14 turns numbered from the Skid Pad (Turn 1) to Turn 14 onto the front straight: 2,509 m (1.56 mi), 8 rights and 6 lefts, 39.8 m (131 ft) of climbing per lap. In the simulation the lap starts at its slowest, a 35 km/h (22 mph) floor in the 8.2 m-radius Skid Pad, and ends at its fastest, leaving Turn 14 at 179 km/h (111 mph); between them sit the Turn 3–4 climb, the 183 m Bowl and a mid-speed return through Turns 8–13. Simulated lap estimates run from 1:18.2 (liter bike) to 1:19.6 (middleweight twin). Every figure here is a physics-simulation estimate, not measured data.
All figures: physics-simulation estimates · generated 2026-10-02 · methodology & assumptions
Track outline © OpenStreetMap contributors (ODbL)
Streets of Willow Springs (Counter-clockwise) — quick facts
Motorcycle track guide · simulation estimates · 2026-10-02
- Layout: Counter-clockwise, 2,509 m (1.56 mi) modeled length, 14 numbered corners: 8 right, 6 left
- Simulated lap estimates: 1:18.2 (liter bike), 1:18.4 (supersport 600), 1:19.6 (middleweight twin)
- Simulated average lap speed: 109.5–111.6 km/h (68–69 mph) depending on class
- Slowest simulated point: Turn 1 (Skid Pad), 35 km/h (22 mph) at an 8.2 m effective radius
- Fastest simulated point: the exit of Turn 14 at 179 km/h (111 mph) on the 600 and liter bike
- Longest simulated brake marker: 213 m (699 ft) before Turn 2 on the liter bike (195 m on the 600, 168 m on the twin)
- Longest corner: Turn 7 (The Bowl), 183 m of arc; biggest exit gain: Turn 13, 52 to 137 km/h (32 to 85 mph)
- Biggest modeled elevation changes: −7.6 m (25 ft) through Turn 14, +2.7 m (9 ft) through The Bowl
Turn 1 — Skid Pad
| Entry | Min | Exit | Brake start | Eff. radius | Elev Δ |
|---|---|---|---|---|---|
| 69 km/h43 mph | 35 km/h22 mph | 70 km/h44 mph | 147 m482 ft | 8 m27 ft | +0.4 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 lap opens at its slowest point. The Skid Pad is a 48 m left wrapped around an 8.2 m effective radius, the tightest on the course, rising 0.4 m. It ends the front straight, so the simulation brakes early: 147 m out on the supersport 600, 165 m on the liter bike, 120 m on the twin, arriving at 69 km/h (43 mph) and bottoming at 35 km/h (22 mph) in every class. The exit is 70 km/h (44 mph) — barely above entry — because Turn 2, the second hairpin, turns back the other way straight afterward.
Turn 2
| Entry | Min | Exit | Brake start | Eff. radius | Elev Δ |
|---|---|---|---|---|---|
| 70 km/h44 mph | 40 km/h25 mph | 72 km/h45 mph | 195 m640 ft | 11 m35 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
Turn 2 is a 36 m right at a 10.8 m effective radius, nearly flat at +0.2 m, and the second-tightest corner on the lap. The simulated entry is 70 km/h (44 mph), the Skid Pad exit speed, and the minimum is 40 km/h (25 mph). The solver's brake marker — 195 m on the supersport 600, 213 m on the liter bike, 168 m on the twin — is the longest on the course and sits back on the front straight: the two hairpins share one braking event. The exit is 72 km/h (45 mph) in every class, heading into the climb.
Turn 3
| Entry | Min | Exit | Brake start | Eff. radius | Elev Δ |
|---|---|---|---|---|---|
| 82 km/h51 mph | 81 km/h50 mph | 106 km/h66 mph | 0 m0 ft | 43 m141 ft | +1.8 m+6 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
Turn 4
| Entry | Min | Exit | Brake start | Eff. radius | Elev Δ |
|---|---|---|---|---|---|
| 103 km/h64 mph | 63 km/h39 mph | 108 km/h67 mph | 18 m59 ft | 26 m86 ft | +2.6 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
Turn 5
| Entry | Min | Exit | Brake start | Eff. radius | Elev Δ |
|---|---|---|---|---|---|
| 136 km/h84 mph | 133 km/h83 mph | 134 km/h84 mph | 21 m69 ft | 117 m383 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
Turn 6
| Entry | Min | Exit | Brake start | Eff. radius | Elev Δ |
|---|---|---|---|---|---|
| 129 km/h80 mph | 128 km/h80 mph | 133 km/h83 mph | 6 m20 ft | 108 m356 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
Turn 7 — The Bowl
| Entry | Min | Exit | Brake start | Eff. radius | Elev Δ |
|---|---|---|---|---|---|
| 101 km/h63 mph | 74 km/h46 mph | 102 km/h64 mph | 84 m276 ft | 36 m117 ft | +2.7 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
The Bowl is the longest corner on the course, 183 m of left-hand arc at a 35.8 m effective radius, and with 2.7 m (9 ft) of gain it is also the biggest climb of any corner in the model. The simulation brakes 84 m out on the supersport 600, 87 m on the liter bike and 81 m on the twin, arrives at 101 km/h (63 mph) in every class, and settles to a 74 km/h (46 mph) minimum through the long arc. The exit is 102 km/h (64 mph) on the two larger bikes and 102 km/h (63 mph) on the twin — only a shade above entry, because the corner is long rather than fast.
Turn 8
| Entry | Min | Exit | Brake start | Eff. radius | Elev Δ |
|---|---|---|---|---|---|
| 99 km/h62 mph | 99 km/h62 mph | 134 km/h83 mph | 51 m167 ft | 70 m230 ft | -2.6 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
Turn 9
| Entry | Min | Exit | Brake start | Eff. radius | Elev Δ |
|---|---|---|---|---|---|
| 127 km/h79 mph | 102 km/h63 mph | 121 km/h75 mph | 24 m79 ft | 69 m225 ft | -1.0 m-3 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
Turn 10
| Entry | Min | Exit | Brake start | Eff. radius | Elev Δ |
|---|---|---|---|---|---|
| 94 km/h59 mph | 83 km/h52 mph | 99 km/h62 mph | 21 m69 ft | 46 m150 ft | -1.4 m-5 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
Turn 11
| Entry | Min | Exit | Brake start | Eff. radius | Elev Δ |
|---|---|---|---|---|---|
| 93 km/h58 mph | 65 km/h41 mph | 104 km/h65 mph | 9 m30 ft | 28 m93 ft | -1.0 m-3 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
Turn 12
| Entry | Min | Exit | Brake start | Eff. radius | Elev Δ |
|---|---|---|---|---|---|
| 93 km/h58 mph | 69 km/h43 mph | 127 km/h79 mph | 42 m138 ft | 31 m103 ft | +0.5 m+2 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
Turn 13
| Entry | Min | Exit | Brake start | Eff. radius | Elev Δ |
|---|---|---|---|---|---|
| 86 km/h54 mph | 52 km/h32 mph | 137 km/h85 mph | 54 m177 ft | 18 m59 ft | -2.9 m-10 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
Turn 14
| Entry | Min | Exit | Brake start | Eff. radius | Elev Δ |
|---|---|---|---|---|---|
| 135 km/h84 mph | 135 km/h84 mph | 179 km/h111 mph | 0 m0 ft | 159 m523 ft | -7.6 m-25 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