How far is Fremont, CA from Simi Valley, CA?
The driving distance from Fremont, CA to Simi Valley, CA is about 351.4 miles (565.6 km), with a travel time of about 06h 42m by car.
- The straight-line flight distance is about 289 miles (465.1 km).
- For a round trip, plan for roughly 13h 24m 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 06h 42m.
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.
City in Kings County, California, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Light Rain
Sunny
Driving Route Map
The map below follows the saved road route between Fremont and Simi Valley.
Turn-by-Turn Driving Directions
Step-by-step road directions between Fremont and Simi Valley.
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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 right to continue on CA 14: Truck Route I 5
3199 ft · 39 sec
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15
Take the exit slight right toward Sierra Highway
1631 ft · 40 sec
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16
Turn right onto Sierra Highway
109 m · 11 sec · Sierra Highway
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17
At the end of the road, turn left onto San Fernando Road
1.1 mi · 2 min · San Fernando Road
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18
Turn right onto Balboa Road
944 ft · 35 sec · Balboa Road
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19
Turn straight onto Balboa Boulevard
2.8 mi · 5 min · Balboa Boulevard
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20
Take the ramp right toward CA 118 West
1880 ft · 48 sec
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21
Merge slight left onto Ronald Reagan Freeway
1.8 mi · 2 min · Ronald Reagan Freeway
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22
Keep slight right to continue on Ronald Reagan Freeway
1.2 mi · 1 min · Ronald Reagan Freeway
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23
Keep slight right to continue on Ronald Reagan Freeway
1.9 mi · 2 min · Ronald Reagan Freeway
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24
Keep slight right to continue on Ronald Reagan Freeway
11.1 mi · 13 min · Ronald Reagan Freeway
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25
Take the exit slight right toward First Street
1667 ft · 53 sec
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26
Turn left onto First Street
1.3 km · 2 min · First Street
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27
Turn right onto East Los Angeles Avenue
697 ft · 17 sec · East Los Angeles Avenue
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28
Turn left onto 3rd Street
856 ft · 38 sec · 3rd Street
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29
Arrive at your destination
0 m · 1 sec · 3rd Street
Car Route Details
A richer read on the saved driving route between Fremont and Simi Valley.
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.
Chance Light Rain leaving Fremont and Sunny near Simi Valley.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Fremont to Simi Valley?
The road trip is about 351.4 miles (565.6 km) and usually takes 06h 42m 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?
Avenal is a useful midpoint, sitting about 175.8 miles from Fremont and 175.7 miles from Simi Valley.
How much longer is the road route than the straight-line distance?
The direct path is about 289 miles (465.1 km), while the road route adds roughly 62.4 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 $71.54 one way or $143.07 round trip. Estimated CO2 is about 110.2 kg one way.
What should you check before leaving?
Before you leave, expect Chance Light Rain around Fremont and Sunny near Simi Valley.
Stop Ideas Near Avenal
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 Avenal.
Kettleman City, California
Lemoore, California
Lemoore (Naval Air Station), California
Corcoran station
Flight Path Map
This map shows the direct air route between Fremont and Simi Valley. Straight-line distance: 288.98 mi (465.07 km).
#1 Fremont
The fifth most populous city in California.
| Population | 234,569 |
| Coordinates | 37.5482700, -121.9885700 |
| Altitude | 17 |
| Country | United States |
#2 Simi Valley
The third most populous city in Ventura County, California.
| Population | 125,168 |
| Coordinates | 34.2694500, -118.7814800 |
| Altitude | 234 |
| Country | United States |
End: Simi Valley (-118.78148, 34.26945)
Estimated Travel Time
Distance: 566 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 11h 42m |
| 40 mph (64.37 km/h) | 08h 47m |
| 50 mph (80.47 km/h) | 07h 01m |
| 60 mph (96.56 km/h) | 05h 51m |
| 70 mph (112.65 km/h) | 05h 01m |
| 80 mph (129 km/h) | 04h 23m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.77 | $71.54 | $143.07 |
| Mid-grade | $6.07 | $75.22 | $150.44 |
| Premium | $6.24 | $77.41 | $154.83 |
| Diesel | $7.57 | $93.83 | $187.66 |
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 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.