How far is Santa Margarita, CA from San Diego, CA?
The driving distance from Santa Margarita, CA to San Diego, CA is about 322.2 miles (518.6 km), with a travel time of about 05h 48m by car.
- The straight-line flight distance is about 270.2 miles (434.8 km).
- For a round trip, plan for roughly 11h 36m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM PST.
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 48m.
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.
Community in California, USA
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 Santa Margarita and San Diego.
Turn-by-Turn Driving Directions
Step-by-step road directions between Santa Margarita and San Diego.
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1
Start on H Street
38 m · 9 sec · H Street
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2
Turn left onto Murphy Avenue
123 m · 20 sec · Murphy Avenue
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3
Turn right onto I Street
2636 ft · 1 min · I Street
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4
Continue on Wilhelmina Avenue
818 ft · 28 sec · Wilhelmina Avenue
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5
Turn left onto El Camino Real
1.6 km · 1 min · El Camino Real
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6
Take the ramp straight
780 ft · 19 sec
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7
Merge slight left onto El Camino Real
8.4 mi · 10 min · El Camino Real
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8
Continue on Cabrillo Highway
11.8 mi · 14 min · Cabrillo Highway
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9
Continue on El Camino Real
44.8 mi · 52 min · El Camino Real
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10
Take the exit slight right toward CA 154: Los Olivos, Lake Cachuma
1266 ft · 39 sec
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11
Turn left onto Chumash Highway
6.4 mi · 10 min · Chumash Highway
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12
Enter the roundabout and take exit 2 toward Chumash Highway
39 m · 2 sec · Chumash Highway
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13
Exit the roundabout onto Chumash Highway
2.2 mi · 3 min · Chumash Highway
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14
Enter the roundabout and take exit 2 toward Chumash Highway
35 m · 2 sec · Chumash Highway
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15
Exit the roundabout onto Chumash Highway
23.9 mi · 33 min · Chumash Highway
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16
Take the ramp slight left toward US 101 South
1206 ft · 32 sec
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17
Merge slight left onto El Camino Real
17 mi · 20 min · El Camino Real
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18
Continue on Ventura Freeway
65.2 mi · 1 hr 15 min · Ventura Freeway
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19
Take the exit slight right toward I 405 North, I 405 South: Sacramento, Santa Monica
758 ft · 19 sec
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20
Keep slight right to continue on I 405 South: San Diego Freeway, Santa Monica
1584 ft · 39 sec
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21
Keep slight left to continue on I 405 South: San Diego Freeway
553 ft · 14 sec
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22
Merge slight left onto San Diego Freeway
13.3 mi · 15 min · San Diego Freeway
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23
Keep slight right to continue on San Diego Freeway
26.5 mi · 31 min · San Diego Freeway
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24
Keep slight right to continue on San Diego Freeway
2.3 mi · 3 min · San Diego Freeway
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25
Keep slight left to continue on San Diego Freeway
893 ft · 12 sec · San Diego Freeway
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26
Keep slight left
10.3 mi · 12 min
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27
Keep slight right to continue on Corona Del Mar Freeway
4 mi · 5 min · Corona Del Mar Freeway
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28
Continue on San Joaquin Hills Transportation Corridor
10.3 mi · 12 min · San Joaquin Hills Transportation Corridor
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29
Take the exit slight right toward La Paz Road, Moulton Parkway
133 m · 6 sec
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30
Keep slight left to continue on CA 73 South: Moulton Parkway
2519 ft · 33 sec
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31
Keep slight left to continue on CA 73 South
3218 ft · 42 sec
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32
Merge slight left onto San Joaquin Hills Transportation Corridor
2.5 mi · 3 min · San Joaquin Hills Transportation Corridor
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33
Merge slight left onto San Diego Freeway
67.8 mi · 1 hr 19 min · San Diego Freeway
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34
Take the exit slight right toward Front Street, Civic Center, 2nd Avenue
1164 ft · 28 sec
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35
Keep slight right to continue on Front Street, Civic Center
592 ft · 15 sec
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36
Continue on Front Street
2662 ft · 2 min · Front Street
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37
Arrive at your destination
0 m · 1 sec · Front Street
Car Route Details
A richer read on the saved driving route between Santa Margarita and San Diego.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
San Diego Freeway
Merge slight left onto San Diego Freeway
67.8 mi · 01h 19m
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 Santa Margarita and Sunny near San Diego.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Santa Margarita to San Diego?
The road trip is about 322.2 miles (518.6 km) and usually takes 05h 48m 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?
Westlake Village is a useful midpoint, sitting about 160.4 miles from Santa Margarita and 161.8 miles from San Diego.
How much longer is the road route than the straight-line distance?
The direct path is about 270.2 miles (434.8 km), while the road route adds roughly 52 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 PST. If you want a more comfortable same-day return, try to leave by 5:24 AM PST.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $66.40 one way or $132.80 round trip. Estimated CO2 is about 101 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Santa Margarita and Sunny near San Diego.
Stop Ideas Near Westlake Village
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Bella Capri Inn & Suites
Homewood Suites by Hilton Agoura Hills
City of Thousand Oaks
Westlake Village Planning
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Westlake Village.
Moorpark
Simi Valley
Camarillo station
Chatsworth station
Flight Path Map
This map shows the direct air route between Santa Margarita and San Diego. Straight-line distance: 270.18 mi (434.81 km).
#1 Santa Margarita
Located in inland San Luis Obispo County at an elevation of 1,010 feet, this rural community is situated between the Santa Lucia and La Panza mountain ranges near the headwaters of the Salinas River.
| Population | 0 |
| Coordinates | 35.3899700, -120.6090600 |
| Altitude | 308 |
| Country | United States |
#2 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 |
End: Front Street (-117.164717, 32.71571)
Estimated Travel Time
Distance: 519 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 10h 44m |
| 40 mph (64.37 km/h) | 08h 03m |
| 50 mph (80.47 km/h) | 06h 26m |
| 60 mph (96.56 km/h) | 05h 22m |
| 70 mph (112.65 km/h) | 04h 36m |
| 80 mph (129 km/h) | 04h 01m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.84 | $66.40 | $132.80 |
| Mid-grade | $6.09 | $69.20 | $138.40 |
| Premium | $6.28 | $71.36 | $142.72 |
| Diesel | $8.28 | $94.15 | $188.31 |
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 · Nov 06, 2026