How far is Castaic, CA from San Francisco, CA?
The driving distance from Castaic, CA to San Francisco, CA is about 342.7 miles (551.5 km), with a travel time of about 05h 33m by car.
- The straight-line flight distance is about 310.5 miles (499.7 km).
- For a round trip, plan for roughly 11h 06m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 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 05h 33m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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.
Sunny
Driving Route Map
The map below follows the saved road route between Castaic and San Francisco.
Turn-by-Turn Driving Directions
Step-by-step road directions between Castaic and San Francisco.
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1
Start on Castaic Oak Lane
19 m · 7 sec · Castaic Oak Lane
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2
Turn right onto Parker Road
154 m · 21 sec · Parker Road
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3
Turn left onto The Old Road
2524 ft · 50 sec · The Old Road
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4
Turn right onto Sloan Canyon Road
134 m · 21 sec · Sloan Canyon Road
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5
Take the ramp left toward I 5 North: Sacramento
1399 ft · 34 sec
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6
Merge slight left onto Golden State Freeway
21.6 mi · 25 min · Golden State Freeway
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7
Keep slight left to continue on Golden State Freeway
22.3 mi · 25 min · Golden State Freeway
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8
Keep slight right to continue on Westside Freeway
225.6 mi · 4 hr 2 min · Westside Freeway
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9
Keep slight left to continue on William Elton Brown Freeway
15.9 mi · 17 min · William Elton Brown Freeway
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10
Keep slight right to continue on William Elton Brown Freeway
1.1 mi · 1 min · William Elton Brown Freeway
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11
Merge slight left onto Arthur H. Breed Junior Freeway
18 mi · 21 min · Arthur H. Breed Junior Freeway
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12
Keep slight right to continue on Arthur H. Breed Junior Freeway
11.6 mi · 13 min · Arthur H. Breed Junior Freeway
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13
Keep slight right to continue on MacArthur Freeway
8.3 mi · 10 min · MacArthur Freeway
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14
Keep slight left to continue on MacArthur Freeway
7.2 mi · 8 min · MacArthur Freeway
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15
Take the exit slight left toward I 80 West: San Francisco
1.5 km · 1 min
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16
Merge slight right onto Dwight D. Eisenhower Highway
1015 ft · 17 sec · Dwight D. Eisenhower Highway
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17
Turn slight left onto Dwight D. Eisenhower Highway
1959 ft · 33 sec · Dwight D. Eisenhower Highway
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18
Keep slight left to continue on Dwight D. Eisenhower Highway
5.5 mi · 8 min · Dwight D. Eisenhower Highway
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19
Continue on Route 80
1438 ft · 24 sec · Route 80
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20
Continue on Route 80
1.2 km · 1 min · Route 80
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21
Continue on Route 80
1893 ft · 32 sec · Route 80
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22
Keep slight right to continue on US 101 North: Golden Gate Bridge
1919 ft · 39 sec
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23
Merge slight right onto Central Freeway
1462 ft · 25 sec · Central Freeway
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24
Continue on Octavia Boulevard
2490 ft · 42 sec · Octavia Boulevard
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25
Turn right onto Market Street
629 ft · 32 sec · Market Street
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26
Keep slight right to continue on Market Street
961 ft · 35 sec · Market Street
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27
Arrive at your destination
0 m · 1 sec · Market Street
Car Route Details
A richer read on the saved driving route between Castaic and San Francisco.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Westside Freeway
Keep slight right to continue on Westside Freeway
226 mi · 04h 02m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Clear leaving Castaic and Sunny near San Francisco.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Castaic to San Francisco?
The road trip is about 342.7 miles (551.5 km) and usually takes 05h 33m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
San Joaquin is a useful midpoint, sitting about 171.1 miles from Castaic and 171.6 miles from San Francisco.
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 32.2 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 8:00 AM PDT. If you want a more comfortable same-day return, try to leave by 5:54 AM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $75.70 one way or $151.39 round trip. Estimated CO2 is about 107.4 kg one way.
What should you check before leaving?
Before you leave, expect Clear around Castaic and Sunny near San Francisco.
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 Castaic and San Francisco. Straight-line distance: 310.48 mi (499.67 km).
#1 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 |
#2 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 |
End: Market Street (-122.419433, 37.774953)
Estimated Travel Time
Distance: 551 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 11h 25m |
| 40 mph (64.37 km/h) | 08h 34m |
| 50 mph (80.47 km/h) | 06h 51m |
| 60 mph (96.56 km/h) | 05h 42m |
| 70 mph (112.65 km/h) | 04h 53m |
| 80 mph (129 km/h) | 04h 16m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $6.26 | $75.70 | $151.39 |
| Mid-grade | $6.50 | $78.57 | $157.15 |
| Premium | $6.69 | $80.87 | $161.74 |
| Diesel | $8.41 | $101.71 | $203.43 |
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