Irvine, CA to Lakeport, CA is 517.5 miles and takes about 9h 56m via Westside Freeway and Golden State Freeway, with a fuel budget near $124 and enough daylight to finish in a day. This long-haul drive traverses California, moving from the Pacific Coast region to another part of the same coast. It's a significant distance, best suited for those looking to cover ground efficiently. Given the duration, consider breaking it up over two recommended days for a more relaxed pace. Plan your route carefully, as it's primarily highway driving.
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
258.8 miles from Irvine, CA
A natural place for your longest stop of the day
, about 4h 48m 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
Saint Helena Highway
28.6 mi
33m
Main Street
22.1 mi
32m
Arthur H. Breed Junior Freeway
19.6 mi
22m
William Elton Brown Freeway
17 mi
18m
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 Lakeport, 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 left at fork onto I 780
6.7 mi·7 min·I 780
Toward I 780: BeniciaUse the straight / slight right lanes.
33
Take the exit
0.3 mi·33 sec
Exit 1BToward I 80 East: SacramentoUse the slight right lane.
34
Keep slight left at fork
448 ft·11 sec
Toward I 80 East: SacramentoUse the slight left lane.
35
Merge onto I 80
2.7 mi·3 min·Dwight D. Eisenhower Highway
Use the straight / slight right lanes.
36
Take the exit
0.1 mi·18 sec
Exit 33Toward CA 37: Napa, Novato, Auto Mall, Columbus ParkwayUse the straight / slight right lanes.
37
Keep slight left at fork
0.5 mi·1 min
Toward CA 37: NapaUse the straight / slight right lanes.
38
Continue on CA 37
1.5 mi·1 min·CA 37
Toward CA 37Use the straight / slight right lanes.
39
Take the exit
0.4 mi·51 sec
Exit 19Toward CA 29: Napa, Sonoma BoulevardUse the straight / slight right lanes.
40
Turn right onto CA 29
1.6 mi·1 min·Sonoma Boulevard
Use the right lane.
41
Continue on CA 29
4.0 mi·4 min·Broadway Street
Use the straight lane.
42
Continue on CA 29
1.3 mi·1 min·Napa–Vallejo Highway
Use the left lane.
43
Continue on CA 12; CA 29
22 mi·25 min·Saint Helena Highway
Use the straight / slight right lanes.
44
Continue on CA 29; CA 128
2.4 mi·2 min·Main Street
45
Continue on CA 29; CA 128
6.8 mi·7 min·Saint Helena Highway
46
Turn right onto CA 29
1.0 mi·1 min·Lincoln Avenue
47
Continue on CA 29
16 mi·24 min·Lake County Highway
48
Turn left onto CA 175
20 mi·29 min·Main Street
49
Turn left onto CA 29; CA 175
9.2 mi·12 min·CA 29; CA 175
50
Turn right onto Soda Bay Road
285 ft·13 sec·Soda Bay Road
51
Turn left onto South Main Street
1.8 mi·3 min·South Main Street
52
Turn left onto 1st Street
267 ft·13 sec·1st Street
53
Turn right onto North Forbes Street
167 ft·9 sec·North Forbes Street
54
Turn right
115 ft·9 sec
55
At end of road, turn left
37 ft·2 sec
56
Arrive at destination
Trip Plan
For this 9h 56m drive, it's highly recommended to split the 517.5 miles over two days. Aim to depart Irvine early in the morning to maximize daylight, especially if you choose to tackle a larger portion on day one. With a fuel cost estimated at $124, be sure to factor this into your budget and plan for at least two stops for fuel and rest. The longest continuous stretch is over 225 miles, so plan your breaks accordingly to avoid fatigue.
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 258.8 miles from Irvine, CA, or about 4h 48m 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 114 miles or 2h 11m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 258.8 miles or 4h 48m 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 258.8 miles or 4h 48m
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 8h 30m
Traffic, exits, and arrival timing usually matter more near Lakeport, 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 259 miles and 5 hours of wheel time on this day.
Day 2
Finish the approach into Lakeport, CA
Aim for roughly 259 miles and 5 hours of wheel time on this day.
Your first comfortable stop window is around 114 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 47
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
$108.27 one way
$216.54 round trip
$5.31/gal25.4 MPG avg181 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$5.52
$112.44
$224.89
premium
$5.67
$115.42
$230.84
diesel
$4.80
$97.71
$195.43
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$108
Hotel (1n)
$80–$140
Meals
$50–$100
Total
$238–$348
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 181.1 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $54 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
155.3
1
$54.34
$24.84
Efficient EV
129.4
1
$45.28
$20.70
EV Truck/SUV
207
2
$72.45
$33.12
Gas CO2
181 kg
EV CO2
61 kg (66% 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 16, 2026
Origin
Irvine, CA
Night
in Irvine on Saturday
Local time
9:40 PM
PDT
Current temp
84°F
Sunny
SW 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
Lakeport, CA
Night
in Lakeport on Saturday
Local time
9:40 PM
PDT
Current temp
86°F
Sunny
WNW 9 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
2 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
9h 56m 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...
8 mi from route
~20 min detour
Free
near mile 410.4
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...
16 mi from route
~41 min detour
Free
near mile 428.3
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...
22 mi from route
~55 min detour
Free
near mile 410.4
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...
22 mi from route
~55 min detour
Free
near mile 71.4
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,...
25 mi from route
~62 min detour
$15
near mile 428.3
Experience a park so rich it supports 19 distinct ecosystems with over 2,000 plant and animal species. Go for a hike, enjoy a vista, have a picnic or learn about the centuries of overlapping history f...
27 mi from route
~68 min detour
Free
near mile 428.3
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This route is largely highway-based, with 78% of the drive on major freeways. You'll encounter a longest stretch of 225.6 miles on the Westside Freeway, indicating extended periods of high-speed cruising. Expect the character of the drive to shift as you move from urban merging and dense exits to more open cruising. Consider the transition from the freeway system to surface roads as you approach your destination.
78% highway — fuel and pacing are the main things to plan.
56 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 47 significant decision points across 517.5 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
High-altitude sections with notable climbs
3,854 ft42 ft
Total Climb
5,630 ft
Total Descent
4,332 ft
Highest Point
3,854 ft
~110.9 mi in
Elevation Range
3,812 ft
Notable High Points
3,854 ft at ~110.9 miles+2,496 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 Lakeport, CA, road signs point toward San Francisco, Sacramento, Concord, Walnut Creek, Novato and Auto Mall.
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 259 miles on day one.
Yes — we found about 40 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
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 Lakeport, 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. There are 40 rest areas along the route for bathroom stops.
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 9.9 hours each way, a round trip means 19.9 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Lakeport, CA before the return drive.
