How far is Fremont, CA from Altadena, CA?
The driving distance from Fremont, CA to Altadena, CA is about 356.4 miles (573.5 km), with a travel time of about 06h 45m by car.
- The straight-line flight distance is about 317 miles (510.1 km).
- For a round trip, plan for roughly 13h 31m 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 45m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
This departure sits inside the recommended comfort window for the route.
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 Altadena.
Turn-by-Turn Driving Directions
Step-by-step road directions between Fremont and Altadena.
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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
22.3 mi · 26 min · Foothill Freeway
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17
Take the exit slight right toward Arroyo Boulevard, Windsor Avenue
1203 ft · 31 sec
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18
Turn left onto Arroyo Boulevard
130 m · 18 sec · Arroyo Boulevard
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19
Continue on Windsor Avenue
159 m · 14 sec · Windsor Avenue
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20
Turn right onto West Woodbury Road
1.3 mi · 3 min · West Woodbury Road
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21
Turn left onto North Marengo Avenue
1.1 km · 2 min · North Marengo Avenue
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22
Turn right onto East Altadena Drive
3197 ft · 1 min · East Altadena Drive
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23
Turn right onto North Lake Avenue
47 m · 4 sec · North Lake Avenue
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24
Arrive at your destination
0 m · 1 sec · North Lake Avenue
Car Route Details
A richer read on the saved driving route between Fremont and Altadena.
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 Altadena.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Fremont to Altadena?
The road trip is about 356.4 miles (573.5 km) and usually takes 06h 45m 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 178.2 miles from Fremont and 178.1 miles from Altadena.
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 39.4 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 $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 Sunny around Fremont and Mostly Sunny near Altadena.
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 Altadena. Straight-line distance: 316.94 mi (510.07 km).
#1 Fremont
The fifth most populous city in California.
| Population | 234,569 |
| Coordinates | 37.5482700, -121.9885700 |
| Altitude | 17 |
| Country | United States |
#2 Altadena
Census-designated place in Los Angeles County, California, United States
| Population | 42,777 |
| Coordinates | 34.1897300, -118.1311800 |
| Altitude | 414 |
| Country | United States |
End: Altadena (-118.13118, 34.18973)
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 18, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.