How far is San Diego, CA from Santa Maria, CA?
The driving distance from San Diego, CA to Santa Maria, CA is about 281.5 miles (453 km), with a travel time of about 05h 39m by car.
- The straight-line flight distance is about 243.1 miles (391.3 km).
- For a round trip, plan for roughly 11h 18m 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 39m.
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.
Located in the central San Fernando Valley, this Los Angeles neighborhood is a densely populated area.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Clear
Driving Route Map
The map below follows the saved road route between San Diego and Santa Maria.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Diego and Santa Maria.
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1
Start on Front Street
8 m · 6 sec · Front Street
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2
Turn left onto West Broadway
88 m · 12 sec · West Broadway
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3
Turn left onto 1st Avenue
3072 ft · 1 min · 1st Avenue
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4
Take the ramp left toward I 5 North: Los Angeles
1017 ft · 25 sec
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5
Merge slight left onto San Diego Freeway
13.5 mi · 16 min · San Diego Freeway
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6
Keep slight left to continue on San Diego Freeway
36.3 mi · 43 min · San Diego Freeway
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7
Keep slight right to continue on San Diego Freeway
18.1 mi · 21 min · San Diego Freeway
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8
Keep slight right to continue on San Joaquin Hills Transportation Corridor
14.1 mi · 16 min · San Joaquin Hills Transportation Corridor
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9
Continue on Corona Del Mar Freeway
4 mi · 5 min · Corona Del Mar Freeway
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10
Merge slight left onto San Diego Freeway
9.6 mi · 11 min · San Diego Freeway
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11
Keep slight left
42.5 mi · 49 min
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12
Take the exit slight right toward US 101 North, US 101 South: Ventura, Los Angeles
3062 ft · 1 min
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13
Keep slight left to continue on US 101 North: Ventura
3235 ft · 1 min
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14
Merge slight right onto Ventura Freeway
46.9 mi · 54 min · Ventura Freeway
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15
Keep slight left
18.5 mi · 21 min
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16
Continue on El Camino Real
16.4 mi · 19 min · El Camino Real
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17
Take the exit slight right toward CA 154: State Street, Cachuma Lake
1127 ft · 29 sec
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18
Continue on Calle Real
1672 ft · 40 sec · Calle Real
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19
Turn right onto Chumash Highway
23.9 mi · 33 min · Chumash Highway
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20
Enter the roundabout and take exit 2 toward Chumash Highway
35 m · 2 sec · Chumash Highway
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21
Exit the roundabout onto Chumash Highway
2.2 mi · 3 min · Chumash Highway
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22
Enter the roundabout and take exit 2 toward Chumash Highway
43 m · 2 sec · Chumash Highway
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23
Exit the roundabout onto Chumash Highway
6.3 mi · 10 min · Chumash Highway
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24
Take the ramp right toward US 101 North
1138 ft · 31 sec
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25
Merge slight left
25.1 mi · 29 min
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26
Take the exit slight right toward CA 166 West: Main Street
918 ft · 28 sec
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27
Turn left onto Nicholson Avenue
156 m · 16 sec · Nicholson Avenue
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28
Turn left onto East Main Street
1.1 mi · 2 min · East Main Street
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29
Continue on East Main Street
53 m · 20 sec · East Main Street
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30
Arrive at your destination
0 m · 1 sec · East Main Street
Car Route Details
A richer read on the saved driving route between San Diego and Santa Maria.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Ventura Freeway
Merge slight right onto Ventura Freeway
46.9 mi · 00h 54m
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 Diego and Mostly Clear near Santa Maria.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from San Diego to Santa Maria?
The road trip is about 281.5 miles (453 km) and usually takes 05h 39m 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?
Van Nuys is a useful midpoint, sitting about 140.4 miles from San Diego and 141.2 miles from Santa Maria.
How much longer is the road route than the straight-line distance?
The direct path is about 243.1 miles (391.3 km), while the road route adds roughly 38.4 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 8:00 AM PDT. If you want a more comfortable same-day return, try to leave by 5:42 AM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $62.17 one way or $124.34 round trip. Estimated CO2 is about 88.2 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around San Diego and Mostly Clear near Santa Maria.
Stop Ideas Near Van Nuys
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
The Beverly Hilton
City of Beverly Hills Parking Lot
Calabasas City Hall
Platinum Banquet Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Van Nuys.
Flight Path Map
This map shows the direct air route between San Diego and Santa Maria. Straight-line distance: 243.15 mi (391.32 km).
#1 San Diego
The eighth most populous city in the United States and the center of the San Diego metropolitan area.
| Population | 1,422,420 |
| Coordinates | 32.7157100, -117.1647200 |
| Altitude | 20 |
| Country | United States |
#2 Santa Maria
Situated in northern Santa Barbara County at an elevation of 220 feet, this city lies within a wide coastal valley between the Pacific Ocean and inland mountain ranges.
| Population | 0 |
| Coordinates | 34.9530300, -120.4357200 |
| Altitude | 67 |
| Country | United States |
End: Santa Maria (-120.43572, 34.95303)
Estimated Travel Time
Distance: 453 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 09h 22m |
| 40 mph (64.37 km/h) | 07h 02m |
| 50 mph (80.47 km/h) | 05h 37m |
| 60 mph (96.56 km/h) | 04h 41m |
| 70 mph (112.65 km/h) | 04h 01m |
| 80 mph (129 km/h) | 03h 30m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $6.26 | $62.17 | $124.34 |
| Mid-grade | $6.50 | $64.54 | $129.07 |
| Premium | $6.69 | $66.42 | $132.84 |
| Diesel | $8.41 | $83.54 | $167.08 |
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