How far is San Francisco, CA from Los Alamos, CA?
The driving distance from San Francisco, CA to Los Alamos, CA is about 280.1 miles (450.7 km), with a travel time of about 05h 26m by car.
- The straight-line flight distance is about 241 miles (387.8 km).
- For a round trip, plan for roughly 10h 53m 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 26m.
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.
City in Monterey County, California, United States
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 San Francisco and Los Alamos.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Francisco and Los Alamos.
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1
Start on Market Street
95 m · 8 sec · Market Street
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2
Turn right onto 11th Street
3173 ft · 2 min · 11th Street
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3
Turn left onto Bryant Street
143 m · 18 sec · Bryant Street
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4
Take the ramp slight right toward US 101 South: San Jose
1719 ft · 29 sec
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5
Merge slight right onto James Lick Freeway
4.3 mi · 6 min · James Lick Freeway
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6
Continue on Bayshore Freeway
5.2 mi · 6 min · Bayshore Freeway
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7
Keep slight left to continue on Bayshore Freeway
25 mi · 29 min · Bayshore Freeway
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8
Keep slight left to continue on Bayshore Freeway
48.8 mi · 56 min · Bayshore Freeway
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9
Continue on El Camino Real
10 mi · 11 min · El Camino Real
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10
Take the exit slight right
1.2 km · 50 sec
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11
Merge slight left onto El Camino Real
135.9 mi · 2 hr 37 min · El Camino Real
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12
Continue on Cabrillo Highway
11.8 mi · 14 min · Cabrillo Highway
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13
Continue on El Camino Real
35.6 mi · 41 min · El Camino Real
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14
Turn right onto Cat Canyon Road
635 ft · 15 sec · Cat Canyon Road
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15
Turn left onto Bell Street
1.3 km · 2 min · Bell Street
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16
At the end of the road, turn left onto Bell Street
2887 ft · 54 sec · Bell Street
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17
Turn left onto Helena Street
115 m · 21 sec · Helena Street
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18
Arrive at your destination
0 m · 1 sec · Leslie Street
Car Route Details
A richer read on the saved driving route between San Francisco and Los Alamos.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
El Camino Real
Merge slight left onto El Camino Real
136 mi · 02h 37m
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.
Sunny leaving San Francisco and Sunny near Los Alamos.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from San Francisco to Los Alamos?
The road trip is about 280.1 miles (450.7 km) and usually takes 05h 26m 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?
Greenfield is a useful midpoint, sitting about 139.9 miles from San Francisco and 140.1 miles from Los Alamos.
How much longer is the road route than the straight-line distance?
The direct path is about 241 miles (387.8 km), while the road route adds roughly 39.1 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 6:06 AM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $61.86 one way or $123.72 round trip. Estimated CO2 is about 87.8 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around San Francisco and Sunny near Los Alamos.
Stop Ideas Near Greenfield
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 Greenfield.
King City, California
Salinas station
Seaside, California
Carmel, California
Flight Path Map
This map shows the direct air route between San Francisco and Los Alamos. Straight-line distance: 240.97 mi (387.8 km).
#1 San Francisco
The seventeenth most populous city in the United States and the center of the San Francisco Bay Area.
| Population | 866,606 |
| Coordinates | 37.7749300, -122.4194200 |
| Altitude | 16 |
| Country | United States |
#2 Los Alamos
Situated in Santa Barbara County's Santa Ynez Valley at an elevation of 571 feet, this census-designated place lies within a region dominated by agriculture and viticulture.
| Population | 0 |
| Coordinates | 34.7444300, -120.2782100 |
| Altitude | 174 |
| Country | United States |
End: Los Alamos (-120.27821, 34.74443)
Estimated Travel Time
Distance: 451 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 09h 19m |
| 40 mph (64.37 km/h) | 07h 00m |
| 50 mph (80.47 km/h) | 05h 36m |
| 60 mph (96.56 km/h) | 04h 40m |
| 70 mph (112.65 km/h) | 04h 00m |
| 80 mph (129 km/h) | 03h 29m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $6.26 | $61.86 | $123.72 |
| Mid-grade | $6.50 | $64.21 | $128.42 |
| Premium | $6.69 | $66.09 | $132.17 |
| Diesel | $8.41 | $83.12 | $166.24 |
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