How far is Castaic, CA from San Bernardino, CA?
The driving distance from Castaic, CA to San Bernardino, CA is about 106.4 miles (171.3 km), with a travel time of about 02h 00m by car.
- The straight-line flight distance is about 80.5 miles (129.6 km).
- For a round trip, plan for roughly 04h 01m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM PDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 02h 00m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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.
A city in Los Angeles 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 Bernardino.
Turn-by-Turn Driving Directions
Step-by-step road directions between Castaic and San Bernardino.
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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
996 ft · 31 sec · Parker Road
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3
Take the ramp right toward I 5 South: Los Angeles
1139 ft · 28 sec
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4
Merge slight left onto Golden State Freeway
12.5 mi · 14 min · Golden State Freeway
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5
Keep slight left to continue on Golden State Freeway
2 mi · 2 min · Golden State Freeway
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6
Take the exit slight right toward I 210 East: Pasadena
1347 ft · 18 sec
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7
Continue on Foothill Freeway
24.4 mi · 28 min · Foothill Freeway
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8
Keep slight right to continue on Foothill Freeway
19.1 mi · 22 min · Foothill Freeway
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9
Keep slight right to continue on Foothill Freeway
2.9 mi · 3 min · Foothill Freeway
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10
Keep slight right to continue on Foothill Freeway
1.4 mi · 2 min · Foothill Freeway
-
11
Keep slight right to continue on Foothill Freeway
1.2 mi · 1 min · Foothill Freeway
-
12
Keep slight right to continue on Foothill Freeway
1.8 mi · 2 min · Foothill Freeway
-
13
Keep slight right to continue on Foothill Freeway
22.8 mi · 26 min · Foothill Freeway
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14
Take the exit slight right toward I 215: Barstow, Riverside
1209 ft · 29 sec
-
15
Keep slight right to continue on I 215 South: Riverside
3196 ft · 1 min
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16
Merge slight left onto Barstow Freeway
1033 ft · 14 sec · Barstow Freeway
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17
Continue on San Bernardino Freeway
1.8 mi · 2 min · San Bernardino Freeway
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18
Take the exit slight right toward CA 66 West: 5th Street, Civic Center
1873 ft · 53 sec
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19
Turn left onto West 5th Street
1.2 km · 2 min · West 5th Street
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20
Arrive at your destination
0 m · 1 sec · West 5th Street
Car Route Details
A richer read on the saved driving route between Castaic and San Bernardino.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Foothill Freeway
Continue on Foothill Freeway
24.4 mi · 00h 28m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Clear leaving Castaic and Sunny near San Bernardino.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Castaic to San Bernardino?
The road trip is about 106.4 miles (171.3 km) and usually takes 02h 00m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Arcadia is a useful midpoint, sitting about 46.4 miles from Castaic and 60.1 miles from San Bernardino.
How much longer is the road route than the straight-line distance?
The direct path is about 80.5 miles (129.6 km), while the road route adds roughly 25.9 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 8:00 AM to 10:00 AM PDT. If you want a more comfortable same-day return, try to leave by 2:28 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $23.54 one way or $47.08 round trip. Estimated CO2 is about 33.4 kg one way.
What should you check before leaving?
Before you leave, expect Clear around Castaic and Sunny near San Bernardino.
Stop Ideas Near Arcadia
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Your Home Away From Home
Bell Gardens Inn Los Angeles
City Hall Park Center
City of Los Angeles
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Arcadia.
Pasadena, California
Glendale Transportation Center
Los Angeles Union Station
La Crescenta, California
Flight Path Map
This map shows the direct air route between Castaic and San Bernardino. Straight-line distance: 80.5 mi (129.56 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 Bernardino
The second most populous city in San Bernardino County, California.
| Population | 217,491 |
| Coordinates | 34.1083400, -117.2897700 |
| Altitude | 321 |
| Country | United States |
End: West 5th Street (-117.289794, 34.108326)
Estimated Travel Time
Distance: 171 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 32m |
| 40 mph (64.37 km/h) | 02h 39m |
| 50 mph (80.47 km/h) | 02h 07m |
| 60 mph (96.56 km/h) | 01h 46m |
| 70 mph (112.65 km/h) | 01h 31m |
| 80 mph (129 km/h) | 01h 19m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $6.26 | $23.54 | $47.08 |
| Mid-grade | $6.50 | $24.44 | $48.87 |
| Premium | $6.69 | $25.15 | $50.30 |
| Diesel | $8.41 | $31.63 | $63.27 |
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