San Diego Might Be NASCAR’s Toughest Road Course Ever
NASCAR has established a 3.4-mile, 16-turn course at Naval Base Coronado, marking the series’ first event on an active military base. Drivers describe the layout as the most technical road course of their careers, featuring a rough concrete flight line and a path passing the USS Carl Vinson supercarrier, according to official course details and driver feedback.
Why is the San Diego course considered so technical?
Drivers say the layout lacks a traditional flow, meaning every corner significantly impacts the next. Chase Briscoe called it the “most technical race track” he has run in his career, noting that he had to change his driving style and use multiple techniques for consecutive corners.

William Byron reported that it took 45 minutes to an hour in the simulator to learn the track and identify the upcoming turns. Byron compared the layout to the Chicago Street Course, stating that while Chicago was tight, San Diego is both tight and “very technical.”
Shane van Gisbergen noted that the roughness and concrete gaps on the flight line remind him of Sebring International Raceway. He stated that a “soft and compliant” suspension setup will be critical to handle the bumps.
How was the Qualcomm Circuit developed?
NASCAR utilized its research and development center in Concord, North Carolina, where drivers used iRacing programs to help shape the track. Jerry Kaproth, NASCAR managing director of track development, said the final configuration remained close to the original plan after consulting with drivers on competitive locations.

The development process included refining tire pack locations with staff from the University of Nebraska at Lincoln. Construction began with equipment moving onto the base on May 25, followed by the start of track wall construction on June 1.
By June 16, Jeremy Casperson, NASCAR senior director of design and development, reported that 98 percent of the right wall and 95 percent of the left wall were installed. Construction also included grandstands and a hospitality facility on the frontstretch.
What are the race day safety and pit logistics?
The pit road consists of rough concrete, as the area normally serves as helicopter parking. Pit stalls are measured at 28 feet-2 inches long by 16 feet-6 inches wide, with an entrance design similar to Sonoma Raceway and a car position similar to Watkins Glen.
Tim Bermann, NASCAR managing director of competition operations, stated that caution periods will be “quickie yellows.” The Southern California Association with the SCCA Corner Workers will manage the course, using blue flags to signal both local and full-course cautions.
Spotters will be positioned atop a barracks building at turn 2, on double-decker buses at turns 5 and 8, and in a building near the chicane. The chicane itself was installed specifically to slow cars before they enter the pit road.
What may happen during the race?
The layout could lead to aggressive passing maneuvers in the middle of the course where there is significant unused open space. William Byron suggested that drivers may give up an exit to gain position, though this could allow opponents to make a run back.

Mistakes in technical sections may be “detrimental” to a driver’s progress, according to Byron. Because the course includes crane rails that were smoothed and added pavement in the chicane, vehicle handling may vary significantly across different sections of the base.
Frequently Asked Questions
What are the dimensions of the San Diego course?
The course is a 3.4-mile layout featuring 16 turns.
Where is the restart zone located?
The restart zone is located in turn 16, and drivers can begin racing as soon as they exit it.
Which parts of the track are on the flight line?
Turns 8 through 13 are located on the flight line, an area typically used for helicopters and Ospreys.
Do you think the technical nature of the San Diego course will favor road-course specialists or overall consistency?