How far is San Bernardino, CA from Westmont, CA?
The driving distance from San Bernardino, CA to Westmont, CA is about 70.2 miles (113 km), with a travel time of about 01h 25m by car.
- The straight-line flight distance is about 59.1 miles (95.1 km).
- For a round trip, plan for roughly 02h 50m 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 01h 25m.
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
Mostly Sunny
Driving Route Map
The map below follows the saved road route between San Bernardino and Westmont.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Bernardino and Westmont.
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1
Start on West 5th Street
1.2 km · 2 min · West 5th Street
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2
Take the ramp left toward I 215 South: Riverside
1641 ft · 42 sec
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3
Merge slight left onto San Bernardino Freeway
2.4 mi · 3 min · San Bernardino Freeway
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4
Take the exit slight right toward I 10: Redlands, Indio, Los Angeles
1187 ft · 29 sec
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5
Keep slight right to continue on I 10 West: Los Angeles
2017 ft · 35 sec
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6
Continue on San Bernardino Freeway
13.9 mi · 16 min · San Bernardino Freeway
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7
Keep slight left to continue on I-10 Metro ExpressLanes
9.3 mi · 10 min · I-10 Metro ExpressLanes
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8
Merge slight right onto San Bernardino Freeway
1.2 mi · 1 min · San Bernardino Freeway
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9
Keep slight right to continue on San Bernardino Freeway
1.4 km · 1 min · San Bernardino Freeway
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10
Keep slight right to continue on San Bernardino Freeway
1.3 mi · 2 min · San Bernardino Freeway
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11
Keep slight right to continue on San Bernardino Freeway
1.9 mi · 2 min · San Bernardino Freeway
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12
Keep slight right to continue on San Bernardino Freeway
1.9 mi · 2 min · San Bernardino Freeway
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13
Keep slight right to continue on San Bernardino Freeway
1.6 mi · 2 min · San Bernardino Freeway
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14
Keep slight right to continue on San Bernardino Freeway
1.4 mi · 2 min · San Bernardino Freeway
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15
Keep slight right to continue on San Bernardino Freeway
1.5 mi · 2 min · San Bernardino Freeway
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16
Keep slight right to continue on San Bernardino Freeway
1.1 mi · 1 min · San Bernardino Freeway
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17
Keep slight right to continue on San Bernardino Freeway
2 mi · 2 min · San Bernardino Freeway
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18
Keep slight right to continue on San Bernardino Freeway
1.6 mi · 2 min · San Bernardino Freeway
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19
Keep slight right to continue on San Bernardino Freeway
1.3 mi · 1 min · San Bernardino Freeway
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20
Take the exit slight right toward I 605: San Gabriel River Freeway
839 ft · 21 sec
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21
Keep slight left to continue on I 605 South: San Bernardino
2135 ft · 52 sec
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22
Merge slight left onto San Gabriel River Freeway
11.6 mi · 13 min · San Gabriel River Freeway
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23
Take the exit slight right toward I 105 West: Imperial Highway
1155 ft · 28 sec
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24
Keep slight left to continue on I 105 West
1.4 km · 2 min
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25
Merge slight left onto Century Freeway
10.3 mi · 12 min · Century Freeway
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26
Take the exit slight right toward Vermont Avenue
1323 ft · 36 sec
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27
Turn right onto South Vermont Avenue
616 ft · 18 sec · South Vermont Avenue
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28
Turn left onto West Imperial Highway
2643 ft · 51 sec · West Imperial Highway
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29
Turn right onto South Normandie Avenue
1.1 km · 1 min · South Normandie Avenue
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30
Turn left onto West 105th Street
691 ft · 32 sec · West 105th Street
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31
Turn right
52 m · 12 sec
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32
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between San Bernardino and Westmont.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
San Bernardino Freeway
Continue on San Bernardino Freeway
13.9 mi · 00h 16m
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.
Sunny leaving San Bernardino and Mostly Sunny near Westmont.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from San Bernardino to Westmont?
The road trip is about 70.2 miles (113 km) and usually takes 01h 25m 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?
Diamond Bar is a useful midpoint, sitting about 35 miles from San Bernardino and 35.2 miles from Westmont.
How much longer is the road route than the straight-line distance?
The direct path is about 59.1 miles (95.1 km), while the road route adds roughly 11.1 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 3:40 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $14.31 one way or $28.61 round trip. Estimated CO2 is about 22 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around San Bernardino and Mostly Sunny near Westmont.
Stop Ideas Near Diamond Bar
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Your Home Away From Home
Embassy Suites by Hilton Brea North Orange County
City of South El Monte City Hall
Chino City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Diamond Bar.
Pomona station
Claremont, California
Ontario
Fullerton Transportation Center
Flight Path Map
This map shows the direct air route between San Bernardino and Westmont. Straight-line distance: 59.12 mi (95.14 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 Westmont
City in DuPage County, Illinois, United States of America
| Population | 31,853 |
| Coordinates | 33.9414000, -118.3023000 |
| Altitude | 66 |
| Country | United States |
End: Westmont (-118.3023, 33.9414)
Estimated Travel Time
Distance: 113 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 20m |
| 40 mph (64.37 km/h) | 01h 45m |
| 50 mph (80.47 km/h) | 01h 24m |
| 60 mph (96.56 km/h) | 01h 10m |
| 70 mph (112.65 km/h) | 01h 00m |
| 80 mph (129 km/h) | 00h 52m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.77 | $14.31 | $28.61 |
| Mid-grade | $6.07 | $15.04 | $30.09 |
| Premium | $6.24 | $15.48 | $30.97 |
| Diesel | $7.57 | $18.77 | $37.53 |
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 24, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.