Irvine to Vacaville is 445.6 miles and takes about 8h 16m via Westside Freeway and Golden State Freeway, with a fuel budget near $101 and ideally split over two days. This drive takes you through California's Pacific Coast region, primarily on major freeways. Given the recommended two-day pace, you'll have ample opportunity to break up the 8+ hours of driving. It's a straightforward, mostly highway trip ideal for those looking to cover ground efficiently.
Trip Pace
Best split across 2 days
Treat the return leg as its own travel day rather than an afterthought.
Break Rhythm
2 planned breaks
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
222.8 miles from Irvine, CA
A natural place for your longest stop of the day
, about 4h 9m into the drive
.
Main Roads
Road
Distance
Duration
Westside Freeway
225.6 mi
4h 1m
Golden State Freeway
50 mi
57m
I 5 Truck
37.7 mi
43m
Santa Ana Freeway
29.6 mi
34m
Arthur H. Breed Junior Freeway
19.6 mi
22m
William Elton Brown Freeway
17 mi
18m
Donald D Doyle Highway
15.2 mi
17m
Senator Daniel E Boatwright Highway
12.9 mi
14m
Longest stretch:
Westside Freeway
— 225.6 mi, about 4h 1m
Traffic on I-5
Hour-of-day weekday pattern from 188 FHWA count stations on your route.
Peak
3 PM
~3,269 veh/hr typical
· worst 4,141
Quietest
2 AM
~544 veh/hr
Peak-to-quiet ratio
6×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 44 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Irvine, CA and Vacaville, CA.
1
Start on I 405
1.4 mi·1 min·San Diego Freeway
2
Take the exit
0.3 mi·21 sec
Exit 4Toward University Drive, Jeffrey Road
3
Turn left onto Jeffrey Road
0.2 mi·22 sec·Jeffrey Road
Use the left lane.
4
Take the ramp
0.2 mi·18 sec
Toward I 405 North: Los AngelesUse the straight / right lanes.
5
Merge onto I 405
4.2 mi·4 min·San Diego Freeway
Use the straight / slight right lanes.
6
Take the exit
0.2 mi·16 sec
Exit 9AToward CA 55 South, CA 55 North: FreewayUse the slight right lane.
7
Keep slight right at fork
0.5 mi·35 sec
Toward CA 55 NorthUse the slight left / slight right lanes.
8
Merge onto CA 55
3.2 mi·3 min·Costa Mesa Freeway
Use the straight / slight right lanes.
9
Keep slight right at fork onto CA 55
0.4 mi·28 sec·Costa Mesa Freeway
Use the straight / slight left lanes.
10
Take the exit
0.7 mi·46 sec
Exit 10BToward I 5 North: Santa AnaUse the straight / slight right lanes.
11
Merge onto I 5
0.5 mi·36 sec·Santa Ana Freeway
Use the straight / slight right lanes.
12
Keep slight right at fork onto I 5
1.7 mi·1 min·Santa Ana Freeway
13
Keep slight right at fork onto I 5
9.4 mi·10 min·Santa Ana Freeway
Use the slight right lane.
14
Keep slight right at fork onto I 5
18 mi·20 min·Santa Ana Freeway
Use the straight / slight right lanes.
15
Keep slight right at fork onto I 5
25 mi·29 min·Golden State Freeway
Use the straight / slight right lanes.
16
Keep slight left at fork onto I 5
2.2 mi·2 min·Golden State Freeway
Use the straight / slight right lanes.
17
Keep slight right at fork onto I 5 Truck
1.5 mi·1 min·I 5 Truck
Exit 161AToward I 5 Truck North, CA 14 TruckUse the straight / slight right lanes.
18
Keep slight left at fork onto I 5 Truck
36 mi·41 min·I 5 Truck
Use the straight / slight right lanes.
19
Keep slight left at fork onto I 5
22 mi·25 min·Golden State Freeway
Use the straight / slight right lanes.
20
Keep slight right at fork onto I 5
226 mi·4 hr 1 min·Westside Freeway
Toward I 5 NorthUse the straight / slight right lanes.
21
Keep slight left at fork onto I 580
16 mi·17 min·William Elton Brown Freeway
Toward I 580 West: Tracy, San Francisco
22
Keep slight right at fork onto I 580 Bypass
1.1 mi·1 min·William Elton Brown Freeway
23
Merge onto I 580
18 mi·20 min·Arthur H. Breed Junior Freeway
Use the straight / slight right lanes.
24
Keep slight right at fork onto I 580
1.6 mi·1 min·Arthur H. Breed Junior Freeway
25
Take the exit
0.2 mi·16 sec
Exit 44BToward I 680 South, I 680 North: San Jose, Sacramento, Concord, Walnut CreekUse the slight right lane.
26
Keep slight right at fork
0.3 mi·30 sec
Toward I 680 North: Walnut Creek, Concord, SacramentoUse the straight / slight right lanes.
27
Merge onto I 680
15 mi·17 min·Donald D Doyle Highway
Use the straight / slight right lanes.
28
Continue on I 680
5.0 mi·5 min·Senator Daniel E Boatwright Highway
Toward I 680, CA 24Use the straight / slight right lanes.
29
Keep slight left at fork onto I 680
6.0 mi·6 min·Senator Daniel E Boatwright Highway
Toward I 680 North: Martinez, SacramentoUse the straight / slight right lanes.
30
Keep slight left at fork onto I 680
243 ft·3 sec·Senator Daniel E Boatwright Highway
31
Keep slight right at fork onto I 680
1.8 mi·2 min·Senator Daniel E Boatwright Highway
Use the slight right lane.
32
Keep slight right at fork onto I 680
0.4 mi·26 sec·Benicia-Martinez Bridge
33
Continue on I 680
12 mi·13 min·Luther E Gibson Freeway
Use the straight / slight right lanes.
34
Keep slight right at fork
0.4 mi·55 sec
Exit 71AToward I 80 East, CA 12 East: Fairfield, Sacramento
35
Merge onto I 80; CA 12
1.7 mi·1 min·Dwight D. Eisenhower Highway
Use the straight / slight right lanes.
36
Keep slight left at fork onto I 80
11 mi·12 min·Dwight D. Eisenhower Highway
Use the straight / slight right lanes.
37
Take the exit
0.2 mi·29 sec
Exit 54AToward Davis StreetUse the straight / slight right lanes.
38
Turn left onto Davis Street
0.5 mi·1 min·Davis Street
Use the left / uturn lanes.
39
Turn left onto Mason Street
0.2 mi·18 sec·Mason Street
40
Turn slight right
104 ft·5 sec
41
Turn right onto Merchant Street
0.2 mi·27 sec·Merchant Street
42
Arrive at destination
Merchant Street
Trip Plan
With an estimated duration of over 8 hours, splitting this drive into two days is highly recommended. Plan to depart early to maximize your daylight and minimize traffic, especially if you're starting on a weekday. The route has a suggested 2 stops, so consider breaking your trip in half, roughly around the 4-hour mark. Keep an eye on your fuel levels, as major freeway stretches can sometimes mean longer distances between service areas; budget around $101 for fuel. The longest stretch of highway is over 200 miles, so ensure you're comfortable and have necessities on hand before embarking on that segment.
Morning Departure
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Evening Departure
This is a long drive — plan for a morning departure or consider splitting it into two days.
This drive is better paced as a 2-day trip.
Plan roughly 2 meaningful breaks for fuel, food, and rest.
The halfway point lands around 222.8 miles from Irvine, CA, or about 4h 9m into the drive.
The longest continuous stretch on this route runs about 225.6 miles.
Consider an overnight stop or starting very early.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 98 miles or 1h 53m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 222.8 miles or 4h 9m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Overnight split
Day 1 wrap after about 222.8 miles or 4h 9m
Stop before fatigue turns the last few hours into a grind. You want day two to start fresh, not just resumed.
Final approach
Final hour starts around 7h 5m
Traffic, exits, and arrival timing usually matter more near Vacaville, CA than in the middle of the route.
Before You Leave
+
Open the route before leaving Irvine, CA so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
+
Pick one backup stop option before the midpoint in case traffic changes your pacing.
+
Treat this as a 2-day road trip and book the overnight stop before the busiest arrival window.
Day 1
Settle into the route from Irvine, CA
Aim for roughly 223 miles and 4.1 hours of wheel time on this day.
Day 2
Finish the approach into Vacaville, CA
Aim for roughly 223 miles and 4.1 hours of wheel time on this day.
Your first comfortable stop window is around 98 miles from Irvine, CA.
This route usually feels better as a 2-day drive than as one long push.
Plan about 2 real breaks rather than only quick fuel stops.
The longest stretch is on Westside Freeway for about 225.6 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 38
5 decision points cluster between mile 6.3 and 411.3 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
8
6.3 mi into trip|~7m in
Take the exit toward CA 55 South, CA 55 North: Freeway
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 9A
Toward CA 55 South, CA 55 North: Freeway
9
68.6 mi into trip|~1h 19m in|I 5 Truck
Keep slight right at fork onto I 5 Truck toward I 5 Truck North, CA 14 Truck
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Exit 161A
Toward I 5 Truck North, CA 14 Truck
8
390.6 mi into trip|~7h 11m in
Take the exit toward I 680 South, I 680 North: San Jose, Sacramento, Concord, Walnut Creek
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 44B
Toward I 680 South, I 680 North: San Jose, Sacr...
9
390.8 mi into trip|~7h 11m in
Keep slight right at fork toward I 680 North: Walnut Creek, Concord, Sacramento
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward I 680 North: Walnut Creek, Concord, Sacr...
8
411.3 mi into trip|~7h 35m in|I 680 / Senator Daniel E Boatwright Highway
Keep slight left at fork onto I 680 / Senator Daniel E Boatwright Highway toward I 680 North: Martinez, Sacramento
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward I 680 North: Martinez, Sacramento
Fuel & Cost
Regular Gas
$93.23 one way
$186.45 round trip
$5.31/gal25.4 MPG avg156 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$5.52
$96.82
$193.64
premium
$5.67
$99.38
$198.77
diesel
$4.80
$84.14
$168.28
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$93
Hotel (1n)
$80–$140
Meals
$50–$100
Total
$223–$333
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 155.9 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $47 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
133.7
1
$46.79
$21.39
Efficient EV
111.4
1
$38.99
$17.82
EV Truck/SUV
178.2
2
$62.38
$28.52
Gas CO2
156 kg
EV CO2
52 kg (67% less)
Plan for 1 charging stop. A 30-minute DC fast charge mid-route should be enough to complete the trip comfortably.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Forecast as of Jul 17, 2026
Origin
Irvine, CA
Night
in Irvine on Saturday
Local time
11:59 PM
PDT
Current temp
84°F
Sunny
S 10 mph4% chanceLive forecast
Extreme Heat Warning
Extreme Heat Warning issued July 16 at 1:29PM PDT until July 16 at 8:00PM PDT by NWS San Diego CA
Extreme Heat Warning
Extreme Heat Warning issued July 16 at 1:29PM PDT until July 16 at 8:00PM PDT by NWS San Diego CA
Destination
Vacaville, CA
Night
in Vacaville on Saturday
Local time
11:59 PM
PDT
Current temp
93°F
Sunny
SW 13 mph0% chanceLive forecast
Extreme Heat Warning
Extreme Heat Warning issued July 16 at 1:29PM PDT until July 16 at 8:00PM PDT by NWS San Diego CA
Extreme Heat Warning
Extreme Heat Warning issued July 16 at 1:29PM PDT until July 16 at 8:00PM PDT by NWS San Diego CA
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
For long drives, weather on day two can matter just as much as conditions at departure, so check the whole travel window rather than only the first day.
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
9 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
8h 16m on the road
This is long enough that the arrival forecast matters almost as much as departure conditions. Recheck both ends before you roll.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
National Parks Near This Route
Worth a detour if your schedule allows.
Port Chicago Naval Magazine National Memorial
National Memorial
On July 17, 1944, a massive explosion jolted the San Francisco East Bay area, shattering windows and lighting up the night sky. At Port Chicago Naval Magazine, 320 men were killed instantly when two s...
5 mi from route
~12 min detour
Free
near mile 414.9
Rosie the Riveter WWII Home Front National Historical Park
National Historical Park
Celebrate and honor the contributions and sacrifices of American civilians on the WWII home front. Discover how diverse communities lived, worked, and interacted. Many faces, many stories, many truths...
17 mi from route
~42 min detour
Free
near mile 414.9
Established in 1988, San Francisco Maritime National Historical Park celebrates America’s maritime heritage on the Pacific Coast. Our 50-acre park has grown around Aquatic Park Cove, a protected area...
23 mi from route
~58 min detour
Free
near mile 414.9
The Santa Monica Mountains offer easy access to surprisingly wild places. Experience the famous beaches of Malibu or explore more than 500 miles of trails. The park abounds with historical and cultura...
23 mi from route
~57 min detour
Free
near mile 61.5
Walk among old growth coast redwoods, cooling their roots in the fresh water of Redwood Creek and lifting their crowns to reach the sun and fog. Federally protected as a National Monument since 1908,...
28 mi from route
~71 min detour
$15
near mile 414.9
Yes, we can! Widely recognized as the most important Latino leader in the United States during the twentieth century, Cesar Chavez led farm workers and supporters in the establishment of the country's...
29 mi from route
~73 min detour
Free
near mile 122.9
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This drive is predominantly highway, with 90% of the 445.6 miles on major roads like the Westside Freeway and Golden State Freeway. You'll encounter your longest uninterrupted stretch of highway at 225.6 miles on the Westside Freeway. After the highway segments, expect a shift to surface roads for the remaining portion of your trip. Be prepared for significant mileage on freeways, which typically means a steady pace with frequent exits.
90% highway — fuel and pacing are the main things to plan.
42 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 225.6 mi on Westside Freeway.
How Hard Is This Drive?
10/10
This is a straightforward highway drive that stays mostly on Westside Freeway and Golden State Freeway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 6.3 miles in.
Driving Effort10/10
High effort - long or complex enough to need steady focus all day
Balances navigation complexity with total wheel time.
This is a demanding drive. With 38 significant decision points across 445.6 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
Where does it get tricky?
The main spots that need attention: at 6.3 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 68.6 miles (I 5 Truck): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 390.6 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Elevation Profile
Hilly terrain with moderate elevation changes
2,822 ft21 ft
Total Climb
3,573 ft
Total Descent
3,448 ft
Highest Point
2,822 ft
~95.5 mi in
Elevation Range
2,800 ft
Notable High Points
2,822 ft at ~95.5 miles+1,736 ft prominence
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Irvine, CA and Vacaville, CA, road signs point toward San Francisco, Sacramento, Concord and Walnut Creek.
Irvine is a city of 308,000 people (2020) in Orange County, California. Irvine is one of the newest and largest cities in Orange County, and it is still growing. The city is a perfectly planned suburbia. The Irvine Company started developing the area in the 1960s and the city was formally incorporated on December 28, 1971.
Top landmarks
•Pretend City Children's Museum — children's Museum in California, U.S.
The longest stretch is about 225.6 miles on Westside Freeway. The full list of main roads is in the Roads section above.
Yes — a 2-day pace is more comfortable than one long haul. A sensible stopping point is after roughly 223 miles on day one.
We did not find dedicated rest areas on this route. For a drive this long, plan bathroom and stretch breaks around gas stations, fast-food stops, or small-town downtowns — check the Nearby Places section for options.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Vacaville, CA before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Plan at least 2 meaningful breaks. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
The main spots that need attention: at 6.3 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 68.6 miles (I 5 Truck): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 390.6 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Yes — Port Chicago Naval Magazine National Memorial, Rosie the Riveter WWII Home Front National Historical Park and San Francisco Maritime National Historical Park (6 total within detour distance). See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 8.3 hours each way, a round trip means 16.5 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Vacaville, CA before the return drive.
