How far is San Bernardino, CA from Alum Rock, CA?
The driving distance from San Bernardino, CA to Alum Rock, CA is about 392.5 miles (631.6 km), with a travel time of about 07h 25m by car.
- The straight-line flight distance is about 339.6 miles (546.6 km).
- For a round trip, plan for roughly 14h 50m 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 25m.
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.
Patchy Fog then Partly Sunny
Partly Cloudy
Driving Route Map
The map below follows the saved road route between San Bernardino and Alum Rock.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Bernardino and Alum Rock.
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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
182.5 mi · 3 hr 16 min · Westside Freeway
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18
Take the exit slight right toward CA 152 West: Gilroy, Hollister, San Jose
1038 ft · 27 sec
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19
Continue straight
28.7 mi · 33 min
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20
Keep slight right
11.9 mi · 17 min
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21
Take the exit slight right toward US 101 North: San Jose
2466 ft · 1 min
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22
Merge slight left onto South Valley Freeway
19.9 mi · 23 min · South Valley Freeway
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23
Keep slight left
8 mi · 9 min
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24
Take the exit slight right toward I 280, I 680: Downtown San Jose, Sacramento
2992 ft · 57 sec
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25
Keep slight right to continue on I 680: Sacramento
2997 ft · 1 min
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26
Merge slight left onto Sinclair Freeway
1.4 km · 1 min · Sinclair Freeway
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27
Take the exit slight right toward Alum Rock Avenue
2394 ft · 1 min
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28
Turn right onto Alum Rock Avenue
1.3 km · 1 min · Alum Rock Avenue
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29
Arrive at your destination
0 m · 1 sec · Alum Rock Avenue
Car Route Details
A richer read on the saved driving route between San Bernardino and Alum Rock.
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
183 mi · 03h 16m
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.
Patchy Fog then Partly Sunny leaving San Bernardino and Partly Cloudy near Alum Rock.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from San Bernardino to Alum Rock?
The road trip is about 392.5 miles (631.6 km) and usually takes 07h 25m 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 196.2 miles from San Bernardino and 196.2 miles from Alum Rock.
How much longer is the road route than the straight-line distance?
The direct path is about 339.6 miles (546.6 km), while the road route adds roughly 52.9 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 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 $79.90 one way or $159.80 round trip. Estimated CO2 is about 123.1 kg one way.
What should you check before leaving?
Before you leave, expect Patchy Fog then Partly Sunny around San Bernardino and Partly Cloudy near Alum Rock.
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 Alum Rock. Straight-line distance: 339.65 mi (546.62 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 Alum Rock
Census-designated place in Santa Clara County, California
| Population | 15,536 |
| Coordinates | 37.3660500, -121.8271800 |
| Altitude | 46 |
| Country | United States |
End: Alum Rock (-121.82718, 37.36605)
Estimated Travel Time
Distance: 632 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 13h 04m |
| 40 mph (64.37 km/h) | 09h 48m |
| 50 mph (80.47 km/h) | 07h 50m |
| 60 mph (96.56 km/h) | 06h 32m |
| 70 mph (112.65 km/h) | 05h 36m |
| 80 mph (129 km/h) | 04h 53m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.77 | $79.90 | $159.80 |
| Mid-grade | $6.07 | $84.01 | $168.03 |
| Premium | $6.24 | $86.47 | $172.93 |
| Diesel | $7.57 | $104.80 | $209.61 |
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 16, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.