How to plan a Pacific Coast Highway trip

Los Angeles and San Francisco are the two ends that have airports worth using. One-way with a drop fee is simpler than a loop that retraces the same coast. South to north puts the ocean on the driver's side and the sun at your back in the afternoon. North to south is the more common rental: pick up in San Francisco, drop in LA, or the reverse.

Four days one-way is the version that still has evenings. Three days works if you skip Hearst Castle or a Monterey overnight. Two days is I-5 with a detour, not Highway 1. How many hours to drive per day still holds: the Big Sur stretch looks short and runs long. Fix the fly-in and the night count first, the way any road trip should.

Carmel to Cambria is the day people underestimate. McWay Falls, Bixby Bridge, and every unmarked turnout add forty minutes each. The road itself is two lanes, often 25 miles an hour, and closes after slides — check Caltrans the week you drive, not the month you booked. Do not stack Hearst Castle and a sunset at Pfeiffer on the same afternoon.

Monterey and Santa Barbara are the towns that absorb a short day. Sleep in one of them, not in a Big Sur inn you cannot change when the road is closed. San Francisco is a city night at the north end, not a driving day. Los Angeles is the same at the south: one neighborhood, not a coast leg.

Night one: land in Los Angeles, sleep near the west side or in Santa Barbara if you can drive two hours after the flight. Day two: Santa Barbara to San Luis Obispo or Cambria, with the coast road after lunch. Day three: Hearst Castle in the morning if you booked it, then the Big Sur stretch north, sleep in Monterey or Carmel. Day four: Seventeen-Mile Drive or Monterey Cannery Row, then the two hours to San Francisco for the flight or a city night.

Reverse it if you fly into SFO. The hours per day stay in the four-to-five band if Big Sur is its own day. A road trip planner with those four stops will show which day blew past five hours once the pullouts are in. Napa is a different trip; do not add Napa Valley onto a Highway 1 itinerary unless you have a fifth night inland.

Lock the rental, the first and last night, and Hearst Castle if you want it — timed entry sells out. Leave the exact Big Sur overnight refundable. If the highway is closed at Lucia, US-101 inland is the backup, and a locked inn on the closed stretch is a wasted night. Optional detours — Point Lobos, a second Santa Barbara dinner, a morning in San Diego before you start north — sit beside the route, not on it.

Maps is the navigation layer once the days exist. The days themselves need drive time on each leg and a link the rest of the car can open. That is the road trip planner, not a starred list of overlooks. Planning in Google Maps will still get you through the next curve.