How far is Bostonia, CA from San Bernardino, CA?
The driving distance from Bostonia, CA to San Bernardino, CA is about 111 miles (178.6 km), with a travel time of about 02h 08m by car.
- The straight-line flight distance is about 92.1 miles (148.3 km).
- For a round trip, plan for roughly 04h 17m 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 08m.
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.
Census-designated place in San Diego County, California, United States of America
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 Bostonia and San Bernardino.
Turn-by-Turn Driving Directions
Step-by-step road directions between Bostonia and San Bernardino.
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1
Start on Broadway
59 m · 8 sec · Broadway
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2
Turn right onto North 2nd Street
1537 ft · 39 sec · North 2nd Street
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3
Take the ramp right toward I 8 West: San Diego
1442 ft · 37 sec
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4
Merge slight left onto Mission Valley Freeway
1.5 km · 1 min · Mission Valley Freeway
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5
Take the exit slight right toward CA 67 North: Magnolia Avenue, Downtown
1142 ft · 28 sec
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6
Keep slight right to continue on CA 67 North: Santee, Lakeside, Magnolia Avenue North
1240 ft · 27 sec
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7
Merge slight left onto North Magnolia Avenue
1384 ft · 23 sec · North Magnolia Avenue
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8
Continue on San Vicente Freeway
1.1 mi · 1 min · San Vicente Freeway
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9
Take the exit slight right toward CA 52 West: Prospect Avenue
880 ft · 21 sec
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10
Keep slight left to continue on CA 52 West
3194 ft · 46 sec
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11
Continue on San Clemente Canyon Freeway
9.3 mi · 11 min · San Clemente Canyon Freeway
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12
Take the exit slight right toward I 15 South, I 15 North: Kearny Villa Road
987 ft · 24 sec
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13
Keep slight right to continue on I 15 North
2678 ft · 1 min
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14
Merge slight left onto Escondido Freeway
2040 ft · 25 sec · Escondido Freeway
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15
Keep slight right to continue on Escondido Freeway
1.3 km · 55 sec · Escondido Freeway
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16
Continue on Semper Fi Highway
1.8 mi · 2 min · Semper Fi Highway
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17
Continue on Escondido Freeway
3.1 mi · 4 min · Escondido Freeway
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18
Continue on Tony Gwynn Memorial Freeway
4.6 mi · 5 min · Tony Gwynn Memorial Freeway
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19
Continue on Escondido Freeway
5.9 mi · 7 min · Escondido Freeway
-
20
Keep slight left to continue on Escondido Freeway
6.9 mi · 8 min · Escondido Freeway
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21
Continue on Avocado Highway
21.9 mi · 23 min · Avocado Highway
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22
Continue on Escondido Freeway
6.3 mi · 7 min · Escondido Freeway
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23
Take the exit slight right toward I 215
1510 ft · 18 sec
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24
Continue on Escondido Freeway
34.5 mi · 40 min · Escondido Freeway
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25
Keep slight right to continue on I 215 North: San Bernardino, Barstow
2413 ft · 51 sec
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26
Merge slight left onto Riverside Freeway
5.4 mi · 6 min · Riverside Freeway
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27
Continue on San Bernardino Freeway
3.3 mi · 4 min · San Bernardino Freeway
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28
Take the exit slight right toward 5th Street, Civic Center
1510 ft · 42 sec
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29
Turn right onto West 5th Street
1.1 km · 1 min · West 5th Street
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30
Arrive at your destination
0 m · 1 sec · West 5th Street
Car Route Details
A richer read on the saved driving route between Bostonia 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.
Escondido Freeway
Continue on Escondido Freeway
34.5 mi · 00h 40m
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 Bostonia 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 Bostonia to San Bernardino?
The road trip is about 111 miles (178.6 km) and usually takes 02h 08m 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?
Rainbow is a useful midpoint, sitting about 55.4 miles from Bostonia and 55.6 miles from San Bernardino.
How much longer is the road route than the straight-line distance?
The direct path is about 92.1 miles (148.3 km), while the road route adds roughly 18.9 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 2:12 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $24.54 one way or $49.09 round trip. Estimated CO2 is about 34.8 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Bostonia and Sunny near San Bernardino.
Stop Ideas Near Rainbow
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
City of Wildomar
Superior Court of California, County of Riverside - Southwest Justice Center
Vista Civic Center
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Rainbow.
Oceanside Transit Center
Sun City, California
Carlsbad Village station
Carlsbad Poinsettia, CA
Flight Path Map
This map shows the direct air route between Bostonia and San Bernardino. Straight-line distance: 92.16 mi (148.31 km).
#1 Bostonia
Located within inland San Diego County at an elevation of 486 feet, this unincorporated community is situated in the El Cajon Valley.
| Population | 0 |
| Coordinates | 32.8075500, -116.9364200 |
| Altitude | 148 |
| 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: 179 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 41m |
| 40 mph (64.37 km/h) | 02h 46m |
| 50 mph (80.47 km/h) | 02h 13m |
| 60 mph (96.56 km/h) | 01h 50m |
| 70 mph (112.65 km/h) | 01h 35m |
| 80 mph (129 km/h) | 01h 23m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $6.26 | $24.54 | $49.09 |
| Mid-grade | $6.50 | $25.48 | $50.95 |
| Premium | $6.69 | $26.22 | $52.44 |
| Diesel | $8.41 | $32.98 | $65.96 |
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