Sonoma Raceway is a road course in Sonoma, CA. Density altitude, corner weights, brake bias and tire degradation across a stint decide your pace. The live DA above is where setup starts.
As temperature, humidity and barometric pressure shift across the day near Sonoma, the density altitude above moves with them — and so should your jetting and tune. Most weather apps show sea-level-corrected pressure, which gives the wrong DA; racer.wiki uses uncorrected station pressure for the real number, the same math a Kestrel runs. Read the full density altitude guide →
Custom race shirts, pit crew hoodies, and all-over print jerseys for Sonoma Raceway fans and drivers. Search 725 dirt tracks for logo art, add your number, live mockup — no MyRacePass $72/yr or design fees.
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