Sonoma Raceway Long
Sonoma Raceway Long is 4.1 km, 12 turns, clockwise. Fastest recorded lap: 1:31.290 (Bentley Continental GT3).
When people think of NASCAR racing, tight packs of colorful stock cars circling counter-clockwise through an oval racetrack come to mind. High banking turns, lots of passing, even some light bumping here and there. And that perception would be correct if there were no complex, clockwise oriented road courses like Sonoma Raceway, 30 miles north of the San Francisco Bay Area, in California. The road course in Sonoma is a 12-turn, 2.39-mile circuit, with an average speed of 77 mph and an average lap time of 1:51.426, enclaved in a region known for its high-quality wineries and its mild weather year-round.
The main attention-grabber in this track is The Carousel, a set of high-speed turns starting from turn four, a tight right-hand corner going into a light, high-speed sweeping turn five, only for turning heavily to the left in six and ending right into a hairpin in the opposite direction at turn seven. That segment is so difficult to maneuver with regular stock cards that NASCAR bypassed it from 1998 until 2019 and only brought it back to life for the circuit's 50th-anniversary celebrations. The new (or old) configuration was so exciting to see that it stayed ever since, and nowadays is the signature feature of Sonoma Raceway.
See our Sonoma Raceway Track Guide for more information on getting the most performance out of this track.
Sonoma Raceway's Long configuration delivers 4.06 kilometers of California wine country's most technical road racing circuit, featuring 12 challenging turns and 49 meters of total elevation change carved into Sonoma Valley hillsides 64 kilometers north of San Francisco. This layout stretches the NASCAR short course configuration by incorporating additional technical sections that transform Sonoma from stock car oval-influenced racing into a pure road course challenge demanding precision brake-turn transitions through blind corners and off-camber sections. The track's signature element—the banked Carousel complex spanning Turns 4 through 6—creates a high-speed sweeping combination where commitment over crests determines corner exit success, while the 180-degree Turn 11 hairpin tests slow-speed grip and patience before unleashing onto straights.
The Long configuration's defining character emerges from brutal surface transitions and technical corner combinations. Turn 1's uphill climb leads to Turn 2's apex where brake release timing dictates mid-sector pace, while Turns 4-6's off-camber Carousel banking punishes early throttle application. Turn 7's tight hairpin sits immediately after the Carousel exit, creating constant direction changes that separate smooth momentum drivers from aggressive over-brakers. Northern California's Mediterranean climate creates dramatic track temperature variations—summer sessions exceed 50°C asphalt temperatures contrasting with morning fog burning off to afternoon heat affecting tire compound strategy. The track's wine country setting limits testing access compared to desert facilities, making Sonoma's blind corners and elevation-masked brake zones particularly challenging for visitors. SCCA, NASA, club racing organizations, and occasional professional series utilize this Long configuration seeking the full technical challenge beyond NASCAR's Turn 4a Chute bypass used for stock car events.
Sonoma averages 15–28°C year-round with winter rains (10 days/month Dec–Jan) giving way to dry summers; April–November is prime track season with minimal rain and warm, stable conditions.
10-yr monthly averages Rain days Driving season
