How far is San Bernardino, CA from Castro Valley, CA?
The driving distance from San Bernardino, CA to Castro Valley, CA is about 409.6 miles (659.2 km), with a travel time of about 07h 34m by car.
- The straight-line flight distance is about 365.2 miles (587.7 km).
- For a round trip, plan for roughly 15h 09m 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 07h 34m.
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.
Census-designated place in Kern County, California
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Chance Light Rain
Driving Route Map
The map below follows the saved road route between San Bernardino and Castro Valley.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Bernardino and Castro Valley.
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1
Start on West 5th Street
1.1 km · 1 min · West 5th Street
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2
Take the ramp right toward I 215 North: Barstow
1769 ft · 45 sec
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3
Merge slight left onto San Bernardino Freeway
1.5 mi · 2 min · San Bernardino Freeway
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4
Continue on Barstow Freeway
2632 ft · 35 sec · Barstow Freeway
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5
Take the exit slight right toward CA 210 West: Pasadena
1 mi · 2 min
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6
Merge slight left onto Foothill Freeway
21.4 mi · 25 min · Foothill Freeway
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7
Keep slight right to continue on Foothill Freeway
1.2 mi · 1 min · Foothill Freeway
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8
Keep slight right to continue on Foothill Freeway
2.4 mi · 3 min · Foothill Freeway
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9
Keep slight right to continue on Foothill Freeway
1.4 mi · 2 min · Foothill Freeway
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10
Keep slight right to continue on Foothill Freeway
1.8 mi · 2 min · Foothill Freeway
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11
Keep slight right to continue on Foothill Freeway
20 mi · 23 min · Foothill Freeway
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12
Keep slight right to continue on Foothill Freeway
25.6 mi · 30 min · Foothill Freeway
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13
Keep slight right
686 ft · 9 sec
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14
Merge slight right
1.6 km · 1 min
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15
Keep slight left
36.1 mi · 42 min
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16
Keep slight left to continue on Golden State Freeway
22.3 mi · 25 min · Golden State Freeway
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17
Keep slight right to continue on Westside Freeway
225.6 mi · 4 hr 2 min · Westside Freeway
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18
Keep slight left to continue on William Elton Brown Freeway
15.9 mi · 17 min · William Elton Brown Freeway
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19
Keep slight right to continue on William Elton Brown Freeway
1.1 mi · 1 min · William Elton Brown Freeway
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20
Merge slight left onto Arthur H. Breed Junior Freeway
18 mi · 21 min · Arthur H. Breed Junior Freeway
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21
Keep slight right to continue on Arthur H. Breed Junior Freeway
11.2 mi · 13 min · Arthur H. Breed Junior Freeway
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22
Take the exit slight right toward Strobridge Avenue
1207 ft · 30 sec
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23
Turn right onto Strobridge Avenue
565 ft · 14 sec · Strobridge Avenue
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24
Turn right onto Castro Valley Boulevard
1058 ft · 22 sec · Castro Valley Boulevard
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25
Turn right onto Lake Chabot Road
18 m · 3 sec · Lake Chabot Road
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26
Arrive at your destination
0 m · 1 sec · Lake Chabot Road
Car Route Details
A richer read on the saved driving route between San Bernardino and Castro Valley.
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.
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.
Mostly Sunny leaving San Bernardino and Chance Light Rain near Castro Valley.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from San Bernardino to Castro Valley?
The road trip is about 409.6 miles (659.2 km) and usually takes 07h 34m 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?
Lost Hills is a useful midpoint, sitting about 204.8 miles from San Bernardino and 204.8 miles from Castro Valley.
How much longer is the road route than the straight-line distance?
The direct path is about 365.2 miles (587.7 km), while the road route adds roughly 44.4 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 $83.42 one way or $166.84 round trip. Estimated CO2 is about 128.5 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around San Bernardino and Chance Light Rain near Castro Valley.
Stop Ideas Near Lost Hills
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 Lost Hills.
Wasco station
Kettleman City, California
Corcoran station
Bakersfield
Flight Path Map
This map shows the direct air route between San Bernardino and Castro Valley. Straight-line distance: 365.2 mi (587.74 km).
#1 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 |
#2 Castro Valley
A city in Alameda County, California.
| Population | 61,388 |
| Coordinates | 37.6941000, -122.0863500 |
| Altitude | 50 |
| Country | United States |
End: Castro Valley (-122.08635, 37.6941)
Estimated Travel Time
Distance: 659 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 13h 38m |
| 40 mph (64.37 km/h) | 10h 14m |
| 50 mph (80.47 km/h) | 08h 11m |
| 60 mph (96.56 km/h) | 06h 49m |
| 70 mph (112.65 km/h) | 05h 51m |
| 80 mph (129 km/h) | 05h 06m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.77 | $83.42 | $166.84 |
| Mid-grade | $6.07 | $87.71 | $175.43 |
| Premium | $6.24 | $90.27 | $180.55 |
| Diesel | $7.57 | $109.42 | $218.84 |
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 · Apr 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.