How far is Fremont, CA from Ontario, CA?
The driving distance from Fremont, CA to Ontario, CA is about 390.8 miles (628.9 km), with a travel time of about 07h 25m by car.
- The straight-line flight distance is about 342.1 miles (550.5 km).
- For a round trip, plan for roughly 14h 51m 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 Kings County, California
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Fremont and Ontario.
Turn-by-Turn Driving Directions
Step-by-step road directions between Fremont and Ontario.
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1
Start on Mowry Avenue
33 m · 5 sec · Mowry Avenue
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2
Continue on Mowry Avenue
1.4 mi · 3 min · Mowry Avenue
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3
Continue on Mowry Avenue
1067 ft · 24 sec · Mowry Avenue
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4
Take the ramp slight right toward I 880 South: San Jose
1568 ft · 40 sec
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5
Merge slight left onto Nimitz Freeway
13.3 mi · 15 min · Nimitz Freeway
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6
Take the exit right toward US 101 South: Los Angeles
758 ft · 34 sec
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7
Merge slight left onto Bayshore Freeway
32.3 mi · 37 min · Bayshore Freeway
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8
Take the exit slight right toward CA 152 East: 10th Street, Pacheco Pass Road
1539 ft · 40 sec
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9
Turn left onto East 10th Street
108 m · 13 sec · East 10th Street
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10
Continue on Pacheco Pass Highway
40.6 mi · 50 min · Pacheco Pass Highway
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11
Take the exit slight right toward I 5: Los Angeles
3148 ft · 1 min
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12
Merge slight left onto Westside Freeway
181.1 mi · 3 hr 14 min · Westside Freeway
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13
Keep slight right
58.4 mi · 1 hr 7 min
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14
Keep slight left to continue on Golden State Freeway
2 mi · 2 min · Golden State Freeway
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15
Take the exit slight right toward I 210 East: Pasadena
1347 ft · 18 sec
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16
Continue on Foothill Freeway
24.4 mi · 28 min · Foothill Freeway
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17
Keep slight right to continue on Foothill Freeway
19.1 mi · 22 min · Foothill Freeway
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18
Keep slight right to continue on Foothill Freeway
2476 ft · 33 sec · Foothill Freeway
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19
Take the exit slight right toward CA 57 South: Santa Ana
1.4 km · 2 min
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20
Continue on Orange Freeway
3.4 mi · 4 min · Orange Freeway
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21
Take the exit slight right toward I 10 East, I 10 West: San Bernardino, Los Angeles
928 ft · 23 sec
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22
Keep slight left to continue on I 10 East: San Bernardino Freeway, San Bernardino
1.1 km · 1 min
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23
Merge slight left onto San Bernardino Freeway
1.9 mi · 2 min · San Bernardino Freeway
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24
Keep slight right to continue on San Bernardino Freeway
4 mi · 5 min · San Bernardino Freeway
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25
Keep slight left to continue on I-10 Metro ExpressLanes
1.7 mi · 2 min · I-10 Metro ExpressLanes
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26
Take the exit slight right
66 m · 5 sec
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27
Merge slight right onto San Bernardino Freeway
1 mi · 1 min · San Bernardino Freeway
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28
Take the exit slight right toward CA 83: Ontario, Upland
1182 ft · 33 sec
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29
Turn right onto North Euclid Avenue
1.7 mi · 3 min · North Euclid Avenue
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30
Turn right onto West Transit Street
115 m · 18 sec · West Transit Street
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31
Turn right onto South Laurel Avenue
75 m · 15 sec · South Laurel Avenue
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32
Turn right onto West Holt Boulevard
139 m · 12 sec · West Holt Boulevard
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33
Arrive at your destination
0 m · 1 sec · Holt Boulevard
Car Route Details
A richer read on the saved driving route between Fremont and Ontario.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Westside Freeway
Merge slight left onto Westside Freeway
181 mi · 03h 14m
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.
Sunny leaving Fremont and Mostly Sunny near Ontario.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Fremont to Ontario?
The road trip is about 390.8 miles (628.9 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?
Kettleman City is a useful midpoint, sitting about 195.4 miles from Fremont and 195.4 miles from Ontario.
How much longer is the road route than the straight-line distance?
The direct path is about 342.1 miles (550.5 km), while the road route adds roughly 48.7 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 $79.55 one way or $159.11 round trip. Estimated CO2 is about 122.6 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Fremont and Mostly Sunny near Ontario.
Stop Ideas Near Kettleman City
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 Kettleman City.
Kettleman City, California
Lemoore, California
Corcoran station
Lemoore (Naval Air Station), California
Flight Path Map
This map shows the direct air route between Fremont and Ontario. Straight-line distance: 342.05 mi (550.48 km).
#1 Fremont
The fifth most populous city in California.
| Population | 234,569 |
| Coordinates | 37.5482700, -121.9885700 |
| Altitude | 17 |
| Country | United States |
#2 Ontario
The second most populous city in San Bernardino County, California.
| Population | 183,393 |
| Coordinates | 34.0633400, -117.6508900 |
| Altitude | 306 |
| Country | United States |
End: Ontario (-117.65089, 34.06334)
Estimated Travel Time
Distance: 629 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 13h 01m |
| 40 mph (64.37 km/h) | 09h 46m |
| 50 mph (80.47 km/h) | 07h 48m |
| 60 mph (96.56 km/h) | 06h 30m |
| 70 mph (112.65 km/h) | 05h 34m |
| 80 mph (129 km/h) | 04h 52m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.77 | $79.55 | $159.11 |
| Mid-grade | $6.07 | $83.65 | $167.30 |
| Premium | $6.24 | $86.09 | $172.18 |
| Diesel | $7.57 | $104.35 | $208.70 |
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.