According to California Highway Patrol logs, the pileup was reported around 5:46 p.m. on October 23, 2026, on northbound Interstate 680, just south of the Calaveras Boulevard off-ramp.

Sunol, CA – Authorities are investigating a minor-injury multi-vehicle accident that happened Friday afternoon in Sunol, a census-designated place in Alameda County.
According to California Highway Patrol logs, the pileup was reported around 5:46 p.m. on October 23, 2026, on northbound Interstate 680, just south of the Calaveras Boulevard off-ramp.
CHP officers and firefighters responded to the scene and found a blue Honda sedan, a white Tesla Model Y, a Lexus sedan, and a gray Honda sedan involved in the collision.
A person reporting the accident told authorities that their 10-year-old son hit his face on the dashboard.
CHP said only minor injuries were reported in the accident. The exact number of patients was not mentioned.
The cause of the collision was not immediately known, but an investigation is ongoing.
