How far is Irvine, CA from Los Osos, CA?
The driving distance from Irvine, CA to Los Osos, CA is about 240.7 miles (387.4 km), with a travel time of about 04h 53m by car.
- The straight-line flight distance is about 205.5 miles (330.7 km).
- For a round trip, plan for roughly 09h 47m 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 04h 53m.
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.
The most populous city in Ventura County, California.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Driving Route Map
The map below follows the saved road route between Irvine and Los Osos.
Turn-by-Turn Driving Directions
Step-by-step road directions between Irvine and Los Osos.
-
1
Start on San Diego Freeway
1.4 mi · 2 min · San Diego Freeway
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2
Take the exit slight right toward University Drive, Jeffrey Road
1456 ft · 21 sec
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3
Turn left onto Jeffrey Road
951 ft · 22 sec · Jeffrey Road
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4
Take the ramp slight right toward I 405 North: Los Angeles
1228 ft · 18 sec
-
5
Merge slight left onto San Diego Freeway
6.5 mi · 7 min · San Diego Freeway
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6
Keep slight right to continue on San Diego Freeway
9.7 mi · 11 min · San Diego Freeway
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7
Keep slight left
42.5 mi · 49 min
-
8
Take the exit slight right toward US 101 North, US 101 South: Ventura, Los Angeles
3062 ft · 1 min
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9
Keep slight left to continue on US 101 North: Ventura
3235 ft · 1 min
-
10
Merge slight right onto Ventura Freeway
46.9 mi · 54 min · Ventura Freeway
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11
Keep slight left
18.5 mi · 21 min
-
12
Continue on El Camino Real
16.4 mi · 19 min · El Camino Real
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13
Take the exit slight right toward CA 154: State Street, Cachuma Lake
1127 ft · 29 sec
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14
Continue on Calle Real
1672 ft · 40 sec · Calle Real
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15
Turn right onto Chumash Highway
23.9 mi · 33 min · Chumash Highway
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16
Enter the roundabout and take exit 2 toward Chumash Highway
35 m · 2 sec · Chumash Highway
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17
Exit the roundabout onto Chumash Highway
2.2 mi · 3 min · Chumash Highway
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18
Enter the roundabout and take exit 2 toward Chumash Highway
43 m · 2 sec · Chumash Highway
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19
Exit the roundabout onto Chumash Highway
6.3 mi · 10 min · Chumash Highway
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20
Take the ramp right toward US 101 North
1138 ft · 31 sec
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21
Merge slight left
53.1 mi · 1 hr 1 min
-
22
Take the exit slight right toward Los Osos Valley Road
1421 ft · 39 sec
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23
Turn left onto Los Osos Valley Road
10.3 mi · 16 min · Los Osos Valley Road
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24
Continue on Los Osos Valley Road
83 m · 14 sec · Los Osos Valley Road
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25
Arrive at your destination
0 m · 1 sec · Los Osos Valley Road
Car Route Details
A richer read on the saved driving route between Irvine and Los Osos.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
US 101 North
Merge slight left
53.1 mi · 01h 01m
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 Irvine and Sunny near Los Osos.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Irvine to Los Osos?
The road trip is about 240.7 miles (387.4 km) and usually takes 04h 53m 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?
Ventura is a useful midpoint, sitting about 120.1 miles from Irvine and 120.6 miles from Los Osos.
How much longer is the road route than the straight-line distance?
The direct path is about 205.5 miles (330.7 km), while the road route adds roughly 35.2 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 8:00 AM PDT. If you want a more comfortable same-day return, try to leave by 7:12 AM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $53.22 one way or $106.44 round trip. Estimated CO2 is about 75.5 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Irvine and Sunny near Los Osos.
Stop Ideas Near Ventura
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Motel 6 Carpinteria, CA - Santa Barbara - South
Ventura City Hall (formerly the Ventura County Courthouse - California Historical Landmark #847)
San Buenaventura City Hall
Housing Authority of the City of San Buenaventura ( Section 8 Office)
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Ventura.
Ventura
Oxnard Transportation Center
Santa Paula, California
Carpinteria station
Flight Path Map
This map shows the direct air route between Irvine and Los Osos. Straight-line distance: 205.49 mi (330.71 km).
#1 Irvine
A city located in Orange County, California.
| Population | 283,700 |
| Coordinates | 33.6694600, -117.8231100 |
| Altitude | 17 |
| Country | United States |
#2 Los Osos
Located along California's Central Coast in San Luis Obispo County at an elevation of 131 feet, this community is positioned on the southern shore of the Morro Bay estuary.
| Population | 0 |
| Coordinates | 35.3110900, -120.8324000 |
| Altitude | 40 |
| Country | United States |
End: Los Osos (-120.8324, 35.31109)
Estimated Travel Time
Distance: 387 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 08h 01m |
| 40 mph (64.37 km/h) | 06h 01m |
| 50 mph (80.47 km/h) | 04h 48m |
| 60 mph (96.56 km/h) | 04h 00m |
| 70 mph (112.65 km/h) | 03h 26m |
| 80 mph (129 km/h) | 03h 00m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $6.26 | $53.22 | $106.44 |
| Mid-grade | $6.50 | $55.24 | $110.48 |
| Premium | $6.69 | $56.86 | $113.71 |
| Diesel | $8.41 | $71.51 | $143.02 |
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