How far is San Francisco, CA from Castaic, CA?
The driving distance from San Francisco, CA to Castaic, CA is about 341.5 miles (549.6 km), with a travel time of about 06h 18m by car.
- The straight-line flight distance is about 310.5 miles (499.7 km).
- For a round trip, plan for roughly 12h 37m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 AM PDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 06h 18m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
City in Fresno County, California
Route Weather Snapshot
Check the forecast at both ends before you head out.
Clear
Driving Route Map
The map below follows the saved road route between San Francisco and Castaic.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Francisco and Castaic.
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1
Start on Market Street
95 m · 8 sec · Market Street
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2
Turn right onto 11th Street
3173 ft · 2 min · 11th Street
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3
Turn left onto Bryant Street
1724 ft · 1 min · Bryant Street
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4
Take the ramp left toward I 80 East: Oakland
1538 ft · 26 sec
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5
Merge slight right onto Route 80
1.5 km · 1 min · Route 80
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6
Continue on Dwight D. Eisenhower Highway
5.8 mi · 9 min · Dwight D. Eisenhower Highway
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7
Take the exit slight right toward I 580 East: Downtown Oakland, Hayward-Stockton
1.6 km · 1 min
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8
Merge slight left onto MacArthur Freeway
15.9 mi · 18 min · MacArthur Freeway
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9
Merge slight left onto Arthur H. Breed Junior Freeway
11.5 mi · 13 min · Arthur H. Breed Junior Freeway
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10
Keep slight right to continue on Arthur H. Breed Junior Freeway
17.8 mi · 21 min · Arthur H. Breed Junior Freeway
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11
Keep slight right to continue on William Elton Brown Freeway
11.1 mi · 12 min · William Elton Brown Freeway
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12
Keep slight left to continue on William Elton Brown Freeway
5.9 mi · 6 min · William Elton Brown Freeway
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13
Merge slight left onto Westside Freeway
224.4 mi · 4 hr · Westside Freeway
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14
Keep slight right
44.9 mi · 51 min
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15
Take the exit slight right toward Castaic
1117 ft · 33 sec
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16
Turn left onto The Old Road
3147 ft · 1 min · The Old Road
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17
Turn right onto Parker Road
154 m · 19 sec · Parker Road
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18
Turn left onto Castaic Oak Lane
19 m · 3 sec · Castaic Oak Lane
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19
Arrive at your destination
0 m · 1 sec · Castaic Oak Lane
Car Route Details
A richer read on the saved driving route between San Francisco and Castaic.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Westside Freeway
Merge slight left onto Westside Freeway
224 mi · 04h 00m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
Better with a longer stop
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
Sunny leaving San Francisco and Clear near Castaic.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from San Francisco to Castaic?
The road trip is about 341.5 miles (549.6 km) and usually takes 06h 18m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
What is the halfway point on this route?
San Joaquin is a useful midpoint, sitting about 170.8 miles from San Francisco and 170.8 miles from Castaic.
How much longer is the road route than the straight-line distance?
The direct path is about 310.5 miles (499.7 km), while the road route adds roughly 31 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 6:00 AM to 7:30 AM PDT. Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $75.45 one way or $150.89 round trip. Estimated CO2 is about 107.1 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around San Francisco and Clear near Castaic.
Stop Ideas Near San Joaquin
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to San Joaquin.
Lemoore (Naval Air Station), California
Fresno station
Madera
Lemoore, California
Flight Path Map
This map shows the direct air route between San Francisco and Castaic. Straight-line distance: 310.48 mi (499.67 km).
#1 San Francisco
The seventeenth most populous city in the United States and the center of the San Francisco Bay Area.
| Population | 866,606 |
| Coordinates | 37.7749300, -122.4194200 |
| Altitude | 16 |
| Country | United States |
#2 Castaic
Situated in the northwestern portion of Los Angeles County, this unincorporated area rests at an elevation of 1,227 feet within the rugged terrain of the Sierra Pelona Mountains.
| Population | 0 |
| Coordinates | 34.4888800, -118.6228700 |
| Altitude | 374 |
| Country | United States |
End: Castaic (-118.62287, 34.48888)
Estimated Travel Time
Distance: 550 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 11h 22m |
| 40 mph (64.37 km/h) | 08h 32m |
| 50 mph (80.47 km/h) | 06h 49m |
| 60 mph (96.56 km/h) | 05h 41m |
| 70 mph (112.65 km/h) | 04h 52m |
| 80 mph (129 km/h) | 04h 15m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $6.26 | $75.45 | $150.89 |
| Mid-grade | $6.50 | $78.31 | $156.63 |
| Premium | $6.69 | $80.60 | $161.20 |
| Diesel | $8.41 | $101.38 | $202.75 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in California · Oct 15, 2026