South Mountain Raceway is a drag strip in Boiling Springs, PA. On the tree, density altitude is everything — it sets your dial-in, your jetting and what the track gives you off the line, while reaction time and 60-foot do the rest. The live DA above is the number to dial from tonight.
As temperature, humidity and barometric pressure shift across the day near Boiling Springs, 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 South Mountain 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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