Driving from Brentwood to Los Angeles covers 343.5 miles and typically takes about 6 hours and 28 minutes. This route is designed as a straightforward one-day trip, making it an efficient way to travel between these Pacific Coast locations. You should budget approximately $47 for fuel to complete the journey. Because the drive is primarily focused on major highways, it is a practical choice if you want to reach your destination without unnecessary detours. While you could break the trip up, most travelers will find it manageable to finish in a single day.
Trip Pace
Same-day drive is realistic
A same-day return is possible, but it will make for a full day on the road.
Break Rhythm
1 planned break
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
171.7 miles from Brentwood, CA
A natural place for your longest stop of the day
, about 3h 14m into the drive
.
Main Roads
Road
Distance
Duration
Westside Freeway
224.4 mi
4h
I 5 Truck
63.9 mi
1h 13m
Hollywood Freeway
16.2 mi
20m
William Elton Brown Freeway
14 mi
15m
Byron Highway
8.1 mi
12m
Golden State Freeway
4.1 mi
4m
Brentwood Boulevard
3.7 mi
5m
Mountain House Parkway
3.4 mi
6m
Longest stretch:
Westside Freeway
— 224.4 mi, about 4h
Turn-by-Turn Driving Directions
Step-by-step road directions between Brentwood, CA and Los Angeles, CA.
1
Start on Brentwood Boulevard
66 ft·8 sec·Brentwood Boulevard
2
Turn left onto Oak Street
97 ft·9 sec·Oak Street
Use the left lane.
3
Turn left
305 ft·23 sec
4
Turn right onto Brentwood Boulevard
3.7 mi·5 min·Brentwood Boulevard
5
Continue on Byron Highway
1.4 mi·2 min·Byron Highway
Use the straight lane.
6
Turn right onto J4
6.7 mi·10 min·Byron Highway
7
Continue on J4
1.5 mi·2 min·Byron-Bethany Road
8
Continue on J4
1.8 mi·2 min·Byron Road
9
Turn right onto Mountain House Parkway
2.7 mi·4 min·Mountain House Parkway
Use the slight left lane.
10
Continue on International Parkway
1.0 mi·1 min·International Parkway
Use the straight lane.
11
Continue on Mountain House Parkway
0.8 mi·1 min·Mountain House Parkway
Use the straight lane.
12
Take the ramp
0.2 mi·30 sec
13
Merge onto I 580
8.1 mi·8 min·William Elton Brown Freeway
14
Keep slight left at fork onto I 580
5.9 mi·6 min·William Elton Brown Freeway
15
Merge onto I 5
224 mi·4 hr·Westside Freeway
Use the straight / slight right lanes.
16
Keep slight right at fork onto I 5 Truck
58 mi·1 hr 6 min·I 5 Truck
Use the straight / slight right lanes.
17
Keep slight left at fork onto I 5
4.1 mi·4 min·Golden State Freeway
Use the straight / slight right lanes.
18
Keep slight right at fork onto I 5 Truck
0.3 mi·17 sec·I 5 Truck
Exit 158Toward I 405 SouthUse the straight / slight right lanes.
19
Keep slight left at fork onto I 5 Truck
5.3 mi·6 min·I 5 Truck
Use the straight / slight right lanes.
20
Take the exit
0.5 mi·32 sec
Exit 153BToward CA 170 South: HollywoodUse the straight / slight right lanes.
21
Continue on CA 170
16 mi·20 min·Hollywood Freeway
Use the straight / slight right lanes.
22
Take the exit
0.1 mi·17 sec
Exit 2CToward BroadwayUse the straight / slight right lanes.
23
Continue on West Aliso Street
409 ft·18 sec·West Aliso Street
Use the straight lane.
24
Turn right onto North Spring Street
0.3 mi·35 sec·North Spring Street
Use the right lane.
25
Turn left onto West 1st Street
354 ft·12 sec·West 1st Street
Use the left lane.
26
Arrive at destination
West 1st Street
Trip Plan
Planning for this 343.5-mile trip requires a clear strategy regarding your stops, as you should limit yourself to just one primary break to maintain your schedule. Since fuel costs hover around $47, check your tank levels before hitting the long 224.4-mile stretch on the Westside Freeway to avoid unnecessary stress. Aim to depart early in the day to navigate the final highway segments before peak traffic intensifies. Keep your itinerary flexible, as the heavy reliance on interstates means that road conditions can change quickly. Prioritize your single stop at a point that allows you to stretch your legs before the final push into Los Angeles.
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.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 171.7 miles from Brentwood, CA, or about 3h 14m into the drive.
The longest continuous stretch on this route runs about 224.4 miles.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 76 miles or 1h 32m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 171.7 miles or 3h 14m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 5h 16m
Traffic, exits, and arrival timing usually matter more near Los Angeles, CA than in the middle of the route.
Before You Leave
+
Open the route before leaving Brentwood, 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.
Day 1
Settle into the route from Brentwood, CA
This is one driving day of about 343.5 miles and 6h 28m.
Your first comfortable stop window is around 76 miles from Brentwood, CA.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 1 real break rather than only quick fuel stops.
The longest stretch is on Westside Freeway for about 224.4 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 18
5 decision points cluster between mile 0 and 343.1 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
7
0 mi into trip|~0m in|Oak Street
Turn left onto Oak Street
Lane positioning matters here
Use the left lane.
8
320.7 mi into trip|~5h 59m in|I 5 Truck
Keep slight right at fork onto I 5 Truck toward I 405 South
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Exit 158
Toward I 405 South
7
326.3 mi into trip|~6h 5m in
Take the exit toward CA 170 South: Hollywood
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / slight right lanes.
Exit 153B
Toward CA 170 South: Hollywood
7
342.9 mi into trip|~6h 27m in
Take the exit toward Broadway
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / slight right lanes.
Exit 2C
Toward Broadway
7
343.1 mi into trip|~6h 27m in|North Spring Street
Turn right onto North Spring Street
Lane positioning matters here
Use the right lane.
Fuel & Cost
Regular Gas
$78.95 one way
$157.90 round trip
$5.84/gal25.4 MPG avg120 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$6.02
$81.36
$162.72
premium
$6.18
$83.54
$167.07
diesel
$5.61
$75.84
$151.68
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$79
Meals
$25–$50
Total
$104–$129
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 120.2 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $36 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
103.1
1
$36.07
$16.49
Efficient EV
85.9
0
$30.06
$13.74
EV Truck/SUV
137.4
1
$48.09
$21.98
Gas CO2
120 kg
EV CO2
40 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 Apr 18, 2026
Origin
Brentwood, CA
Morning
in Brentwood on Sunday
Local time
10:29 AM
PDT
Current temp
--
Unavailable
Destination
Los Angeles, CA
Morning
in Los Angeles on Sunday
Local time
10:29 AM
PDT
Current temp
53°F
Mostly Clear
NE 5 mph0% chanceLive forecast
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.
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Road read
6h 28m on the road
Start early — leave by 6-7 AM to arrive at a reasonable hour.
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...
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 319.8
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...
27 mi from route
~68 min detour
Free
near mile 260.6
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
Expect a focused, highway-heavy experience, as 95% of your travel occurs on major thoroughfares. You will spend the bulk of your time on the Westside Freeway, I-5 Truck route, and the Hollywood Freeway. The most significant portion of your journey is a 224.4-mile stretch on the Westside Freeway, which accounts for the majority of your time behind the wheel. Prepare for a consistent, high-speed pace rather than a winding backroad adventure. Once you transition into the final segments of the drive, the character of the road shifts as you navigate the approach into the Los Angeles metro area.
95% highway — fuel and pacing are the main things to plan.
26 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 224.4 mi on Westside Freeway.
How Hard Is This Drive?
8/10
This is a straightforward highway drive that stays mostly on Westside Freeway and I 5 Truck. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes early in the drive near Oak Street.
Driving Effort8/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 18 significant decision points across 343.5 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: near the start (Oak Street): Lane positioning matters here; at 320.7 miles (I 5 Truck): Highway fork - watch signs carefully. Lane positioning matters here; at 326.3 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
Brentwood is an affluent, suburban city in eastern Contra Costa County, California with a popular downtown for visitors coming from the Sacramento Valley to the county. It serves as one of the eastern gateways to the East Bay, along with Livermore. Many in the city are commuters.
Top landmarks
•Stone House of John Marsh — historic stone house in Contra Costa County, California
Frank Lloyd Wright is said to have quipped, "Tip the world over on its side and everything loose will land in Los Angeles," a quote that has since been repeated both by those who love and hate L.A. The "City of Angels" is home to people who hail from all parts of the globe and an important center of culture, business, media, and international trade. However, it's most famous for being a major center of the world's television, motion picture, and music industry, which forms the base of the city's status and lures visitors for its show business history and celebrity culture. Visitors are also drawn to Los Angeles for its Mediterranean climate and numerous beaches, which gave birth to California's famed surf culture.
Top landmarks
•Hollywood Walk of Fame — more than 2,700 five-pointed terrazzo and brass stars embedded in the sidewalks...
•Hollywood Sign — sign reading "HOLLYWOOD" located in Los Angeles, California, United States
•Getty Center — campus of the Getty Museum and other programs of the Getty Trust in Los Angeles
Doable as a same-day drive at 6h 28m. Total distance: 343.5 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
6h 28m drive, plan rest stops for pacing.
Frequently Asked Questions
The longest stretch is about 224.4 miles on Westside Freeway. The full list of main roads is in the Roads section above.
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 Los Angeles, 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 1 meaningful breaks. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
The main spots that need attention: near the start (Oak Street): Lane positioning matters here; at 320.7 miles (I 5 Truck): Highway fork - watch signs carefully. Lane positioning matters here; at 326.3 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
Yes — Port Chicago Naval Magazine National Memorial, Santa Monica Mountains National Recreation Area and César E. Chávez National Monument. See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 6.5 hours each way, a round trip means 13.0 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Los Angeles, CA before the return drive.
