How far is Fort Casey, WA from San Diego, CA?
The driving distance from Fort Casey, WA to San Diego, CA is about 1296.9 miles (2087.2 km), with a travel time of about 25h 28m by car.
- The straight-line flight distance is about 1105.4 miles (1778.9 km).
- For a round trip, plan for roughly 50h 57m 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 25h 28m.
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 Shasta County, California, USA
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Cloudy
Driving Route Map
The map below follows the saved road route between Fort Casey and San Diego.
Turn-by-Turn Driving Directions
Step-by-step road directions between Fort Casey and San Diego.
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1
Start on the route
25 m · 11 sec
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2
Turn left onto Engle Road
1867 ft · 1 min · Engle Road
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3
Turn slight right
701 ft · 29 sec
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4
Turn left onto State Route 20
28 m · 2 sec · State Route 20
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5
Turn straight onto Port Townsend-Coupeville Ferry
5.8 mi · 35 min · Port Townsend-Coupeville Ferry
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6
Continue on Ferry Dock
732 ft · 42 sec · Ferry Dock
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7
At the end of the road, turn left onto Water Street
1598 ft · 48 sec · Water Street
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8
Turn straight onto East Sims Way
1031 ft · 27 sec · East Sims Way
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9
Enter the roundabout and take exit 2 toward East Sims Way
25 m · 2 sec · East Sims Way
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10
Exit the roundabout onto East Sims Way
1.5 mi · 4 min · East Sims Way
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11
Enter the roundabout and take exit 2 toward West Sims Way
35 m · 2 sec · West Sims Way
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12
Exit the roundabout onto West Sims Way
1425 ft · 40 sec · West Sims Way
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13
Enter the roundabout and take exit 2 toward West Sims Way
31 m · 2 sec · West Sims Way
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14
Exit the roundabout onto West Sims Way
2199 ft · 48 sec · West Sims Way
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15
Continue on State Route 20
2.1 mi · 4 min · State Route 20
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16
Continue on State Route 20
7.7 mi · 12 min · State Route 20
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17
Take the ramp slight left toward State Highway 20
120 m · 12 sec · State Highway 20
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18
Merge slight right onto Olympic Highway
83.6 mi · 1 hr 54 min · Olympic Highway
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19
Keep slight right to continue on I 5 South: Tumwater, Portland
756 ft · 19 sec
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20
Keep slight left to continue on I 5 South: Portland
2984 ft · 1 min
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21
Merge slight left
95.8 mi · 1 hr 45 min
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22
Keep slight left
431.3 mi · 8 hr 28 min
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23
Keep slight left to continue on Cascade Wonderland Highway
35.5 mi · 39 min · Cascade Wonderland Highway
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24
Continue on Westside Freeway
93 mi · 1 hr 40 min · Westside Freeway
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25
Keep slight left to continue on Westside Freeway
15.7 mi · 17 min · Westside Freeway
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26
Keep slight left to continue on Westside Freeway
78.8 mi · 1 hr 28 min · Westside Freeway
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27
Keep slight left to continue on Westside Freeway
1.2 km · 49 sec · Westside Freeway
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28
Keep slight left to continue on Westside Freeway
236.6 mi · 4 hr 14 min · Westside Freeway
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29
Keep slight right
58.4 mi · 1 hr 7 min
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30
Keep slight left to continue on Golden State Freeway
4.1 mi · 5 min · Golden State Freeway
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31
Keep slight right to continue on I 405 South
1354 ft · 18 sec
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32
Keep slight left
24.7 mi · 29 min
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33
Keep slight left to continue on Golden State Freeway
1.3 mi · 2 min · Golden State Freeway
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34
Merge slight left onto Santa Ana Freeway
25.7 mi · 30 min · Santa Ana Freeway
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35
Keep slight right to continue on Santa Ana Freeway
1241 ft · 16 sec · Santa Ana Freeway
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36
Take the exit slight right toward Broadway, Main Street, Santa Ana
1.3 km · 57 sec
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37
Keep slight left
788 ft · 10 sec
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38
Keep slight left to continue on I 5 South
981 ft · 13 sec
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39
Merge slight left onto Santa Ana Freeway
1.3 km · 54 sec · Santa Ana Freeway
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40
Keep slight right to continue on Santa Ana Freeway
1.2 km · 52 sec · Santa Ana Freeway
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41
Keep slight right to continue on Santa Ana Freeway
1.2 mi · 1 min · Santa Ana Freeway
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42
Take the exit slight right toward Newport Avenue
1.2 km · 1 min
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43
Turn right onto Newport Avenue
1943 ft · 44 sec · Newport Avenue
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44
Turn left onto Walnut Avenue
2.2 mi · 4 min · Walnut Avenue
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45
Turn left onto Jamboree Road
2595 ft · 38 sec · Jamboree Road
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46
Take the exit slight right toward I 5 South
1479 ft · 21 sec
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47
Merge slight left onto Santa Ana Freeway
5.5 mi · 6 min · Santa Ana Freeway
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48
Keep slight left to continue on Santa Ana Freeway
1.3 km · 56 sec · Santa Ana Freeway
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49
Merge slight right onto San Diego Freeway
76.5 mi · 1 hr 29 min · San Diego Freeway
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50
Take the exit slight right toward Front Street, Civic Center, 2nd Avenue
1164 ft · 28 sec
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51
Keep slight right to continue on Front Street, Civic Center
592 ft · 15 sec
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52
Continue on Front Street
2662 ft · 2 min · Front Street
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53
Arrive at your destination
0 m · 1 sec · Front Street
Car Route Details
A richer read on the saved driving route between Fort Casey and San Diego.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
I 5 South
Keep slight left
431 mi · 08h 28m
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 Cloudy leaving Fort Casey 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 Fort Casey to San Diego?
The road trip is about 1296.9 miles (2087.2 km) and usually takes 25h 28m 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?
Anderson is a useful midpoint, sitting about 648.6 miles from Fort Casey and 648.3 miles from San Diego.
How much longer is the road route than the straight-line distance?
The direct path is about 1105.4 miles (1778.9 km), while the road route adds roughly 191.5 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 $248.76 one way or $497.52 round trip. Estimated CO2 is about 406.8 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy around Fort Casey and Sunny near San Diego.
Stop Ideas Near Anderson
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Sculpture Park
Redding Electric Utility
Redding City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Anderson.
Redding station
Redding (RABA Transit Center), California
Red Bluff, California
Corning, California
Flight Path Map
This map shows the direct air route between Fort Casey and San Diego. Straight-line distance: 1105.33 mi (1778.85 km).
#1 Fort Casey
Situated on the western shore of Whidbey Island in Island County at an elevation of 10 feet, this site occupies a strategic position overlooking Admiralty Inlet at the entrance to Puget Sound.
| Population | 0 |
| Coordinates | 48.1642600, -122.6787800 |
| Altitude | 3 |
| 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: San Diego (-117.16472, 32.71571)
Estimated Travel Time
Distance: 2087 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 43h 12m |
| 40 mph (64.37 km/h) | 32h 25m |
| 50 mph (80.47 km/h) | 25h 56m |
| 60 mph (96.56 km/h) | 21h 36m |
| 70 mph (112.65 km/h) | 18h 31m |
| 80 mph (129 km/h) | 16h 10m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.44 | $248.76 | $497.52 |
| Mid-grade | $5.72 | $261.76 | $523.52 |
| Premium | $5.98 | $273.57 | $547.13 |
| Diesel | $7.29 | $333.75 | $667.51 |
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 Washington · Oct 15, 2026