Location of the San Andreas Fault

The San Andreas fault forms a continuous narrow break in the Earth's crust that extends from northern California southward to Cajon Pass near San Bernardino. Southeastward from Cajon Pass several branching faults, including the San Jacinto and Banning faults, share the movement of the crustal plates. In this stretch of the fault zone, the name "San Andreas" generally is applied to the northeastern most branch.

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The figure below shows the general location of the San Andreas fault and several other major faults in California.

The San Andreas fault system and other large faults in California: different segments of the fault display different behavior.