| San Marcos Pass | |
|---|---|
 Along San Marcos Pass Rd., just west of Paradise Rd. in Los Padres National Forest | |
| Elevation | 2,225 ft (678 m) |
| Traversed by |  SR 154 |
| Location | Santa Barbara County, California, United States |
| Range | Santa Ynez Mountains |
| Coordinates | 34°30′42″N 119°49′29″W / 34.51167°N 119.82472°W |
San Marcos Pass (Chumash: Mistaxiwax)[1] is a mountain pass in the Santa Ynez Mountains in southern California.
It is traversed by State Route 154. The pass crosses the Santa Ynez through a southwestern portion of Los Padres National Forest, and connects Los Olivos (and the Santa Ynez Valley) with Santa Barbara, California along the Pacific coast. The road has been designated as a daylight-headlight highway by the California Highway Patrol and Caltrans because of frequent accidents, particularly around the exit for Lake Cachuma.