It runs in San Mateo County from U.S. Route 101 in East Palo Alto to State Route 84 in Menlo Park west of the Dumbarton Bridge.

SR 114 was originally planned to stretch to I-280, but that portion was never constructed and has since been deleted from the legislative definition.

Here, it meets Hamilton Avenue and its east end at SR 84, which continues to the Dumbarton Bridge over the San Francisco Bay.

[2] Except where prefixed with a letter, postmiles were measured on the road as it was in 1964, based on the alignment that existed at the time, and do not necessarily reflect current mileage.

[1] Segments that remain unconstructed or have been relinquished to local control may be omitted.