Sonoma Raceway: The Hillside Road Course in California Wine Country
Drive north out of San Francisco, cross the Golden Gate, and in well under an hour the freeway noise gives way to marshland, grazing sheep and rows of vines. At the junction where Highway 37 meets Highway 121, on the southern edge of the Sonoma Valley, a ribbon of asphalt climbs abruptly out of the Carneros lowlands and disappears over a ridge. This is Sonoma Raceway, a road course that has been part of the Californian racing landscape since 1968, and one of the very few major circuits anywhere that shares its neighborhood with world-famous wineries. The setting is idyllic; the racetrack itself is anything but gentle.
Where wine country meets the racing line
Sonoma Raceway sits in the Carneros district, the cool, breezy wine region that straddles the southern ends of both the Sonoma and Napa valleys. Fog rolls in from San Pablo Bay in the mornings, burns off by midday, and afternoon winds sweep across the open hills — the same conditions that make the area ideal for pinot noir and chardonnay also give the circuit its distinctive character. Grip levels change as the track surface heats and cools, and drivers who set up their cars for a foggy morning practice session can find a completely different racetrack waiting for them in the dry afternoon heat.
The circuit is draped over a natural hillside rather than carved flat into it, which is the single most important fact about the place. From the lowest point of the property to the highest, the racing surface climbs roughly 160 feet, and almost no section of the lap is genuinely level. The elevation change does more than make the track photogenic. It hides apexes behind crests, loads and unloads the suspension mid-corner, and punishes any driver who has not committed the topography to memory. Spectators benefit too: the natural amphitheater means that from many vantage points on the hillsides you can see huge swathes of the circuit at once, something flat road courses simply cannot offer.
From Sears Point to Sonoma
The track opened in 1968 under the name Sears Point Raceway, taking its name from the local landmark at the southern tip of the Sonoma Mountains. In its early decades it hosted a broad mix of sports car racing, motorcycle events and drag racing, establishing itself as Northern California's home for road racing while Laguna Seca played a similar role further south on the Monterey Peninsula. The facility changed hands several times over the years and went through periods of financial uncertainty before Speedway Motorsports acquired it in 1996 and invested heavily in modernizing the property.
The name has shifted with the commercial times. In 2002 a naming-rights agreement with a semiconductor company saw the track become Infineon Raceway, a label it carried for a decade. Since 2012 it has raced under the simpler, more geographically honest name of Sonoma Raceway. Longtime fans and many drivers still slip and call it Sears Point, and the old name survives in everyday paddock conversation the way Riverside and Ontario linger in Californian racing memory.
Anatomy of the lap
The full road course measures about 2.52 miles and threads through twelve numbered turns, but the numbers undersell how relentless the lap actually is. The start-finish straight is short and slightly kinked, and the very first act of the lap is a climb: Turn 2 is a steep uphill left-hander where the track rises so sharply that drivers aim at a piece of sky rather than a visible apex. The ascent continues through the twisting complex at the top of the hill, where a blind crest launches cars light over the rise and any excess ambition is punished by unforgiving runoff.
Then comes the circuit's signature corner, the Carousel. It is a long, sweeping, downhill left-hander that seems to go on forever, tightening and dropping at the same time. Carrying speed through the Carousel requires trusting the car through a corner where the exit is invisible at entry, and it feeds directly onto the fastest part of the lap. From there the track plunges through the esses, a rhythmic left-right sequence taken at serious speed, before the hard braking zone that defines so many races here: Turn 11, a slow hairpin just before the finish line. It is the classic last-lap overtaking spot, the corner where championships and race wins have been decided with lunges down the inside, and where many a promising afternoon has ended in bent bodywork.
The combination is what makes Sonoma so respected among drivers. There is no single mighty straight and no showpiece banking; instead there is a continuous negotiation with gradient, camber and blind entries. Brakes cook in the hairpin, tires scrub across the abrasive surface, and track position matters because passing requires either bravery at Turn 11 or creativity elsewhere.
NASCAR's twisting examination
Sonoma has been a fixture on the NASCAR Cup Series calendar since 1989, when Ricky Rudd won the first Cup race held at the track. For decades it was one of only two road courses the series visited each season, which made the annual June trip to wine country a genuine outlier: heavy stock cars, built for ovals, wrestled around a circuit that punishes clumsy braking and rewards delicate throttle control. Road course specialists became cult heroes here, and regular front-runners were sometimes humbled.
No one mastered the place like Jeff Gordon, the Californian who grew up racing in the region and went on to win five Cup races at Sonoma, still the benchmark. The race, long associated with the Save Mart sponsorship, has produced a remarkable list of winners over the decades, from road racing ringers to champions proving they could do everything. For a long stretch NASCAR used a shortened layout that bypassed the Carousel via a connector known as the Chute, keeping the racing compact; the full Carousel eventually returned to the NASCAR lap in 2019, to the delight of purists who felt the circuit's best corner belonged in its biggest race.
Champions crowned among the vines
Open-wheel racing wrote its own chapter here. The IndyCar Series raced at Sonoma every year from 2005 through 2018, and in its later years the event served as the season finale, which meant the championship itself was repeatedly settled in the hills of Carneros. Scott Dixon won both the race and the title there in 2015, and Simon Pagenaud did the same in 2016, sealing his championship with a dominant weekend. The sight of a newly crowned champion celebrating with vineyard rows in the background became one of the series' signature images of that era.
The property is also a major venue for straight-line speed. A quarter-mile drag strip shares the facility with the road course, and the NHRA has made its annual summer stop in Sonoma a highlight of the professional drag racing season, traditionally as part of the sport's grueling western swing through three tracks in three weekends. Add motorcycle racing history, sports car events, historic racing festivals and near-daily activity from racing schools and track days, and Sonoma ranks among the busiest motorsport facilities in the United States, active far beyond its televised marquee weekends.
A racetrack that lives with its landscape
Part of what makes Sonoma Raceway distinctive is how thoroughly it inhabits its agricultural surroundings rather than fighting them. A resident flock of sheep grazes the steep infield and hillside grass, doing the mowing the terrain makes difficult for machines. A large solar installation helps power the facility, and the venue has leaned into its wine country identity with vineyard partnerships and hospitality that would feel out of place at almost any other American speedway. On a quiet weekday you can hear club racers' engines echo off hills that are otherwise silent but for wind and birdsong.
That contrast is the essence of the place. Sonoma is simultaneously one of the most demanding road courses in North America and one of the most pleasant places on the continent to simply watch cars. Few tracks reward a visit — or a deep dive — quite so richly.
Explore on the map
Sonoma Raceway is just one point in a dense cluster of Californian motorsport venues, from the coastal corkscrews of Monterey to the dirt ovals of the Central Valley. To see exactly where the circuit sits at the meeting point of San Pablo Bay and the Sonoma Valley, and to discover every other circuit, speedway and drag strip in the region, open the interactive map and zoom into Northern California. The hills of wine country are only the beginning.