How far is San Diego, CA from Castroville, CA?
The driving distance from San Diego, CA to Castroville, CA is about 432.6 miles (696.2 km), with a travel time of about 08h 25m by car.
- The straight-line flight distance is about 382.4 miles (615.4 km).
- For a round trip, plan for roughly 16h 50m 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 08h 25m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
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.
Mostly Sunny
Sunny
Driving Route Map
The map below follows the saved road route between San Diego and Castroville.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Diego and Castroville.
-
1
Start on Front Street
8 m · 6 sec · Front Street
-
2
Turn left onto West Broadway
88 m · 12 sec · West Broadway
-
3
Turn left onto 1st Avenue
3072 ft · 1 min · 1st Avenue
-
4
Take the ramp left toward I 5 North: Los Angeles
1017 ft · 25 sec
-
5
Merge slight left onto San Diego Freeway
13.5 mi · 16 min · San Diego Freeway
-
6
Keep slight left to continue on San Diego Freeway
36.3 mi · 43 min · San Diego Freeway
-
7
Keep slight right to continue on San Diego Freeway
18.1 mi · 21 min · San Diego Freeway
-
8
Keep slight left to continue on San Diego Freeway
7.4 mi · 9 min · San Diego Freeway
-
9
Keep slight right to continue on Bake Parkway
1.6 mi · 2 min
-
10
Keep slight right
6 mi · 7 min
-
11
Take the exit slight right toward Jamboree Road
1266 ft · 17 sec
-
12
Continue straight
527 ft · 11 sec
-
13
Turn right onto Jamboree Road
760 ft · 18 sec · Jamboree Road
-
14
Turn left onto El Camino Real
2.2 mi · 5 min · El Camino Real
-
15
Turn left onto Newport Avenue
109 m · 14 sec · Newport Avenue
-
16
Take the ramp right toward I 5 North: Los Angeles
1127 ft · 17 sec
-
17
Merge slight left onto Santa Ana Freeway
1.3 mi · 1 min · Santa Ana Freeway
-
18
Keep slight right to continue on Santa Ana Freeway
1.7 mi · 2 min · Santa Ana Freeway
-
19
Keep slight right to continue on Santa Ana Freeway
9.4 mi · 11 min · Santa Ana Freeway
-
20
Keep slight right to continue on Santa Ana Freeway
18 mi · 21 min · Santa Ana Freeway
-
21
Keep slight right to continue on Golden State Freeway
25.5 mi · 30 min · Golden State Freeway
-
22
Keep slight left to continue on Golden State Freeway
2.2 mi · 3 min · Golden State Freeway
-
23
Keep slight right to continue on I 5 Truck North, CA 14 Truck
1.5 mi · 2 min
-
24
Keep slight left
36.1 mi · 42 min
-
25
Keep slight left to continue on Golden State Freeway
22.3 mi · 25 min · Golden State Freeway
-
26
Keep slight right to continue on Westside Freeway
57.7 mi · 1 hr 2 min · Westside Freeway
-
27
Take the exit slight right toward CA 46: Lost Hills, Paso Robles
1799 ft · 28 sec
-
28
Turn left onto Paso Robles Highway
2.6 mi · 4 min · Paso Robles Highway
-
29
Continue straight
1539 ft · 20 sec
-
30
Merge slight left onto Paso Robles Highway
29.7 mi · 35 min · Paso Robles Highway
-
31
Continue on Antelope Road
6.8 mi · 9 min · Antelope Road
-
32
Keep slight right
24.4 mi · 29 min
-
33
Take the exit right
1183 ft · 29 sec
-
34
Merge slight left onto El Camino Real
95.9 mi · 1 hr 51 min · El Camino Real
-
35
Take the exit slight right toward Market Street
731 ft · 22 sec
-
36
Turn right onto Kern Street
592 ft · 10 sec · Kern Street
-
37
Turn right onto East Market Street
3106 ft · 1 min · East Market Street
-
38
Turn left onto East Front Street
133 m · 11 sec · East Front Street
-
39
Keep slight right to continue on East Market Street
1.9 mi · 3 min · East Market Street
-
40
Continue on Castroville Road
5.9 mi · 8 min · Castroville Road
-
41
Continue on Merritt Street
1.3 mi · 2 min · Merritt Street
-
42
Arrive at your destination
0 m · 1 sec · Merritt Street
Car Route Details
A richer read on the saved driving route between San Diego and Castroville.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
El Camino Real
Merge slight left onto El Camino Real
95.9 mi · 01h 51m
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.
Mostly Sunny leaving San Diego and Sunny near Castroville.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from San Diego to Castroville?
The road trip is about 432.6 miles (696.2 km) and usually takes 08h 25m 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?
Greenfield is a useful midpoint, sitting about 216.4 miles from San Diego and 216.2 miles from Castroville.
How much longer is the road route than the straight-line distance?
The direct path is about 382.4 miles (615.4 km), while the road route adds roughly 50.2 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 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 $88.03 one way or $176.07 round trip. Estimated CO2 is about 135.6 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around San Diego and Sunny near Castroville.
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.
Bakersfield
Wasco station
Tehachapi, California
Mojave, California
Flight Path Map
This map shows the direct air route between San Diego and Castroville. Straight-line distance: 382.41 mi (615.43 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 Castroville
Town in the U.
| Population | 6,481 |
| Coordinates | 36.7657900, -121.7580000 |
| Altitude | 7 |
| Country | United States |
End: Castroville (-121.758, 36.76579)
Estimated Travel Time
Distance: 696 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 14h 24m |
| 40 mph (64.37 km/h) | 10h 48m |
| 50 mph (80.47 km/h) | 08h 39m |
| 60 mph (96.56 km/h) | 07h 12m |
| 70 mph (112.65 km/h) | 06h 10m |
| 80 mph (129 km/h) | 05h 23m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.77 | $88.03 | $176.07 |
| Mid-grade | $6.07 | $92.57 | $185.13 |
| Premium | $6.24 | $95.27 | $190.54 |
| Diesel | $7.57 | $115.47 | $230.94 |
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.