California 227 begins at U.S. 101 at Exit 187A in Arroyo Grande, then travels north on an alignment parallel to U.S. 101. California 227 passes by several wineries, then rejoins U.S. 101 at the Madonna Road interchange (Exit 201). An unconstructed segment would extend California 227 south from Arroyo Grande to California 1 east of downtown Oceano.
