How far is Altadena, CA from Fremont, CA?
The driving distance from Altadena, CA to Fremont, CA is about 356.2 miles (573.2 km), with a travel time of about 05h 52m by car.
- The straight-line flight distance is about 317 miles (510.1 km).
- For a round trip, plan for roughly 11h 45m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 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 05h 52m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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
Chance Light Rain
Driving Route Map
The map below follows the saved road route between Altadena and Fremont.
Turn-by-Turn Driving Directions
Step-by-step road directions between Altadena and Fremont.
-
1
Start on North Lake Avenue
47 m · 6 sec · North Lake Avenue
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2
Turn left onto East Altadena Drive
3241 ft · 2 min · East Altadena Drive
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3
Turn left onto Marengo Avenue
1.1 km · 2 min · Marengo Avenue
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4
Turn right onto East Woodbury Road
1.3 mi · 3 min · East Woodbury Road
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5
Turn left onto Windsor Avenue
574 ft · 17 sec · Windsor Avenue
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6
Take the ramp right toward I 210 West: San Fernando
1838 ft · 45 sec
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7
Merge slight left onto Foothill Freeway
22.3 mi · 26 min · Foothill Freeway
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8
Keep slight right
686 ft · 9 sec
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9
Merge slight right
1.6 km · 1 min
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10
Keep slight left
36.1 mi · 42 min
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11
Keep slight left to continue on Golden State Freeway
22.3 mi · 25 min · Golden State Freeway
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12
Keep slight right to continue on Westside Freeway
182.5 mi · 3 hr 16 min · Westside Freeway
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13
Take the exit slight right toward CA 152 West: Gilroy, Hollister, San Jose
1038 ft · 27 sec
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14
Continue straight
28.7 mi · 33 min
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15
Keep slight right
11.9 mi · 17 min
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16
Take the exit slight right toward US 101 North: San Jose
2466 ft · 1 min
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17
Merge slight left onto South Valley Freeway
19.9 mi · 23 min · South Valley Freeway
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18
Keep slight left
12.2 mi · 14 min
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19
Take the exit slight right toward I 880 North: Oakland
1188 ft · 29 sec
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20
Merge slight left onto Nimitz Freeway
7.3 mi · 8 min · Nimitz Freeway
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21
Keep slight right to continue on Nimitz Freeway
5.7 mi · 7 min · Nimitz Freeway
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22
Take the exit slight right toward Mowry Avenue, Central Fremont
1419 ft · 36 sec
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23
Turn right onto Mowry Avenue
1.4 mi · 3 min · Mowry Avenue
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24
Arrive at your destination
0 m · 1 sec · Mowry Avenue
Car Route Details
A richer read on the saved driving route between Altadena and Fremont.
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.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Mostly Sunny leaving Altadena and Chance Light Rain near Fremont.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Altadena to Fremont?
The road trip is about 356.2 miles (573.2 km) and usually takes 05h 52m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Kettleman City is a useful midpoint, sitting about 177.9 miles from Altadena and 178.3 miles from Fremont.
How much longer is the road route than the straight-line distance?
The direct path is about 317 miles (510.1 km), while the road route adds roughly 39.2 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 8:00 AM PDT. If you want a more comfortable same-day return, try to leave by 5:14 AM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $72.52 one way or $145.03 round trip. Estimated CO2 is about 111.7 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Altadena and Chance Light Rain near Fremont.
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 Altadena and Fremont. Straight-line distance: 316.94 mi (510.07 km).
#1 Altadena
Census-designated place in Los Angeles County, California, United States
| Population | 42,777 |
| Coordinates | 34.1897300, -118.1311800 |
| Altitude | 414 |
| Country | United States |
#2 Fremont
The fifth most populous city in California.
| Population | 234,569 |
| Coordinates | 37.5482700, -121.9885700 |
| Altitude | 17 |
| Country | United States |
End: Mowry Avenue (-121.988548, 37.548259)
Estimated Travel Time
Distance: 573 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 11h 52m |
| 40 mph (64.37 km/h) | 08h 54m |
| 50 mph (80.47 km/h) | 07h 07m |
| 60 mph (96.56 km/h) | 05h 56m |
| 70 mph (112.65 km/h) | 05h 05m |
| 80 mph (129 km/h) | 04h 26m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.77 | $72.52 | $145.03 |
| Mid-grade | $6.07 | $76.25 | $152.50 |
| Premium | $6.24 | $78.47 | $156.95 |
| Diesel | $7.57 | $95.12 | $190.23 |
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.