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Event types:
HPDE
86 / GR Challenge
Special Event
Enduro
Miata TT
AutoX
Bimmer Challenge
SpeedSF Challenge
Slip Happens
January
1 event weekend
Jan 10–11 · Sat/Sun
Thunderhill East
Thunderhill Raceway Park
HPDE Track DayHPDE
February
2 event weekendsFeb 14–15 · Sat/Sun
Thunderhill East — Cyclone / Bypass
Thunderhill Raceway Park — East
Event Components
HPDE Track DayHPDE
86 Challenge — Feb 14, 202686 Challenge
SpeedSF Challenge — Feb 15, 2026SpeedSF Challenge
NorCal Miata TT — Feb 15, 2026Miata TT
Feb 28 · Sat
Sonoma Raceway
Sonoma Raceway
HPDE Track DayHPDE
March
2 event weekends
Mar 1 · Sun · 5PM–10PM
Slip Happens — Sonoma
Sonoma Raceway
Event Components
AutoXSlip Happens
NorCal Miata TT — Mar 1, 2026Miata TT
Mar 14–15 · Sat/Sun
Laguna Seca 92db
WeatherTech Raceway Laguna Seca
Event Components
HPDE Track Day (Sat + Sun)HPDE
86 Challenge86 Challenge
April
4 event weekends
Apr 4–5 · Sat/Sun
Thunderhill West
Thunderhill Raceway Park — West
Event Components
HPDE Track Day (Sat + Sun)HPDE
86 Challenge CCW — Apr 4, 202686 Challenge
86 Challenge CW — Apr 5, 202686 Challenge
NorCal Miata TT — Apr 5, 2026Miata TT
Apr 4–5 · Sat/Sun
Laguna Seca 103db
WeatherTech Raceway Laguna Seca
HPDE Track Day (Sat + Sun)HPDE
Apr 10 · Fri
Thunderhill East
Thunderhill Raceway Park — East
HPDE Track DayHPDE
Apr 15 · Wed · 5PM–10PM
Slip Happens — Sonoma
Sonoma Raceway
AutoXSlip Happens
Apr 25–26 · Sat/Sun
Buttonwillow Circuit
Buttonwillow Raceway Park
Event Components
HPDE Track Day (Sat + Sun)HPDE
2.5 Hr Enduro Round 1 — Apr 25–26, 2026Enduro
86 Challenge — Apr 25, 202686 Challenge
SpeedSF Challenge — Apr 26, 2026SpeedSF Challenge
May
2 event weekendsMay 8–10 · Fri–Sun · ★ Featured Weekend
Sonoma Raceway — GR Motorsport Fest Weekend
Sonoma Raceway · 3-Day Weekend
All components across 3 days
HPDE Track Day — Fri–SunHPDE
AutoX — Fri–SunAutoX
GR Motorsport FestSpecial
86 Challenge — May 9, 202686 Challenge
GRC ChallengeGR Challenge
Bimmer Challenge — May 9, 2026Bimmer
Time Attack FestSpecial
Corvette DaySpecial
NorCal Miata ChallengeMiata TT
SpeedSF Challenge — May 10, 2026SpeedSF Challenge
May 16–17 · Sat/Sun
Thunderhill Open
Thunderhill Raceway Park — 5 Mile
HPDE Track Day — All Drivers, All CarsSpecial
Tesla CorsaSpecial
June
3 event weekendsJun 6–7 · Sat/Sun
Thunderhill East
Thunderhill Raceway Park — East
Event Components
HPDE Track Day (Sat + Sun)HPDE
86 Challenge86 Challenge
July
4 event weekendsJul 3–5, 2026 · Fri–Sun · 4th of July Weekend
Sonoma Raceway
Sonoma Raceway · 3-Day Weekend
Event Components
HPDE Track Day — Fri–SunHPDE
Bimmer Challenge — Jul 5, 2026Bimmer
SpeedSF Challenge — Time Attack — Jul 5, 2026SpeedSF Challenge
JDM Day — Jul 5, 2026Special
Jul 4, 2026 · Sat · S2000 Mega Meet
S2000 Mega Meet 2026
Sonoma Raceway · July 4
Special Event
Honda S2000 car meetSpecial events
Parade LapsParade
HPDE + AutoXHPDE
Jul 5, 2026 · Sun · JDM Day
JDM Day 2026
Sonoma Raceway · July 5, 2026
Special Event
JDM car meetSpecial events
Parade LapsParade
HPDEHPDE
AutoXAutoX
August
1 eventSeptember
4 event weekendsOctober
2 event weekendsOct 24–25 · Sat/Sun
Thunderhill West
Thunderhill Raceway Park — West
Event Components
HPDE Track Day (Sat + Sun)HPDE
86 Challenge — Oct 24, 202686 Challenge
NorCal Miata TT — Oct 25, 2026Miata TT
SpeedSF Challenge — Oct 24–25, 2026SpeedSF Challenge
November
4 event weekendsNov 14–15 · Sat/Sun
Laguna Seca 105db
WeatherTech Raceway Laguna Seca
Event Components
HPDE Track Day (Sat + Sun)HPDE
GR DaySpecial
Bimmer Challenge — Nov 15, 2026Bimmer
Nov 27 · Fri
Buttonwillow Classic
Buttonwillow Raceway Park — CW13
Event Components
HPDE Track DayHPDE
NorCal Miata TT — Nov 27, 2026Miata TT
SpeedSF Challenge — Nov 27, 2026SpeedSF Challenge
Nov 28–29 · Sat/Sun
Laguna Seca 92db
WeatherTech Raceway Laguna Seca
HPDE Track Day (Sat + Sun)HPDE
Nov 28–29 · Sat/Sun
Sonoma Raceway
Sonoma Raceway
Event Components
HPDE Track Day (Sat + Sun)HPDE
86 Challenge — Nov 28, 202686 Challenge
Bimmer Challenge — Nov 29, 2026Bimmer
SpeedSF Challenge — Nov 29, 2026SpeedSF Challenge
AutoX — Sat + SunAutoX
December
1 event weekendDec 19–20 · Sat/Sun
Laguna Seca 92db
WeatherTech Raceway Laguna Seca
HPDE Track Day (Sat + Sun)HPDE