Buttonwillow Raceway Park (Configuration 13) (CW)

Buttonwillow 13CW has a proper rhythm-track character, mixing the tight, awkward rotation of corner 3 with long, loaded arcs through corners 8–14 that make the lap feel more flowing than stop-start. The most lap-sensitive parts are the big commitment zones around corners 12, 14 and 17, with corner 18 also carrying extra weight because it closes the lap and links back onto the main straight. Its personality comes from the contrast: compact direction changes early, a fast middle sector that keeps the car loaded for ages, then the late corner 16–17–18 sequence that can make or break the lap’s momentum.