Placer County: Highway 20 about 4 miles west of the Interstate 80 junction. A Pacific Gas & Electric company canal crosses under the highway and appears to westbound travelers to flow uphill to the left[61]
Devore: On Glen Helen road pass two consecutive train tracks and end up at a stop sign. Make a U-Turn and head back towards the tracks, but stop the car at the beginning of a chain link fence on the left hand (driver) side.[62][63]
Whittier: Site at cemetery in Whittier, on Workman Mill Rd., near Rio Hondo Community College[64]
San Diego: The exit ramp in Mira Mesa/Sorrento Valley while going 805-S is a gravity hill. Testers should be cautious, considering it is a freeway exit.[65]
Santa Cruz: Mystery Spot at 465 Mystery Spot Road is a spot about 150 feet in diameter located in a redwood forest.[66]
Petaluma: (Located in Sonoma County) From US 101 Freeway, take Rohnert Park Expressway east to Petaluma Hill Road. Petaluma Hill Road south to Roberts Road. Roberts road east to Lichau Road. At an iron gate with the words, "Gracias San Antonio", is the start of the gravity hill section (on the western slope of *Sonoma Mountain near the Fairfield Osborn Preserve).[65]
Oak Glen: A magnetic hill is founded 10 miles or so down Oak Glen Road passed Riley's Farm. The hill is located two turns passed Riley's.