Antioch, CA to San Bernardino, CA is 405.5 miles and takes about 7h 39m via Westside Freeway and I 5 Truck, with a fuel budget near $97 and enough daylight to finish in a day. This trip stays within California, traversing the Pacific Coast region for most of its length. Expect a straightforward drive that's primarily on major freeways, making it a practical choice for getting from Northern California to Southern California efficiently. Given its duration and highway focus, it's well-suited for a single-day transit.
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
2 planned breaks
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
202.8 miles from Antioch, CA
A natural place for your longest stop of the day
, about 3h 49m into the drive
.
Main Roads
Road
Distance
Duration
Westside Freeway
224.4 mi
4h
Foothill Freeway
73.7 mi
1h 24m
I 5 Truck
58.4 mi
1h 6m
William Elton Brown Freeway
14 mi
15m
CA 4
9.9 mi
11m
Byron Highway
5.1 mi
7m
Mountain House Parkway
3.4 mi
6m
Vasco Road
3.4 mi
4m
Longest stretch:
Westside Freeway
— 224.4 mi, about 4h
Traffic on I-5
Hour-of-day weekday pattern from 162 FHWA count stations on your route.
Peak
2 PM
~1,824 veh/hr typical
· worst 2,650
Quietest
2 AM
~367 veh/hr
Peak-to-quiet ratio
5×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 89 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 Antioch, CA and San Bernardino, CA.
1
Start on East 18th Street
70 ft·8 sec·East 18th Street
2
Turn left onto A Street
0.5 mi·1 min·A Street
Use the left lane.
3
Turn left
0.3 mi·45 sec
Toward CA 4 East: StocktonUse the left lane.
4
Merge onto CA 4
1.9 mi·2 min·CA 4
Use the straight / slight right lanes.
5
Keep slight left at fork onto CA 4
8.0 mi·9 min·CA 4
Use the straight / slight right lanes.
6
Continue on Vasco Road
3.4 mi·4 min·Vasco Road
Use the left / straight / right lanes.
7
Turn left onto Camino Diablo
1.6 mi·3 min·Camino Diablo
8
Turn right onto J4
5.1 mi·7 min·Byron Highway
9
Continue on J4
1.5 mi·2 min·Byron-Bethany Road
10
Continue on J4
1.8 mi·2 min·Byron Road
11
Turn right onto Mountain House Parkway
2.7 mi·4 min·Mountain House Parkway
Use the slight left lane.
12
Continue on International Parkway
1.0 mi·1 min·International Parkway
Use the straight lane.
13
Continue on Mountain House Parkway
0.8 mi·1 min·Mountain House Parkway
Use the straight lane.
14
Take the ramp
0.2 mi·30 sec
15
Merge onto I 580
8.1 mi·8 min·William Elton Brown Freeway
16
Keep slight left at fork onto I 580
5.9 mi·6 min·William Elton Brown Freeway
17
Merge onto I 5
224 mi·4 hr·Westside Freeway
Use the straight / slight right lanes.
18
Keep slight right at fork onto I 5 Truck
58 mi·1 hr 6 min·I 5 Truck
Use the straight / slight right lanes.
19
Keep slight left at fork onto I 5
2.0 mi·2 min·Golden State Freeway
Use the straight / slight right lanes.
20
Take the exit
0.3 mi·17 sec
Exit 161AToward I 210 East: PasadenaUse the slight right lane.
21
Continue on I 210
24 mi·28 min·Foothill Freeway
Use the straight / slight right lanes.
22
Keep slight right at fork onto I 210
19 mi·22 min·Foothill Freeway
Toward CA 134 West, I 210 East: San Bernardino, VenturaUse the slight right lane.
23
Keep slight right at fork onto I 210
2.9 mi·3 min·Foothill Freeway
Use the straight / slight right lanes.
24
Keep slight right at fork onto CA 210
1.4 mi·1 min·Foothill Freeway
Use the straight / slight right lanes.
25
Keep slight right at fork onto CA 210
1.2 mi·1 min·Foothill Freeway
Use the straight / slight right lanes.
26
Keep slight right at fork onto CA 210
1.8 mi·2 min·Foothill Freeway
Use the straight / slight right lanes.
27
Keep slight right at fork onto CA 210
23 mi·26 min·Foothill Freeway
Use the straight / slight right lanes.
28
Take the exit
0.2 mi·29 sec
Exit 74Toward I 215: Barstow, RiversideUse the straight / slight right lanes.
29
Keep slight right at fork
0.6 mi·1 min
Exit 74Toward I 215 South: RiversideUse the slight left / slight right lanes.
30
Merge onto I 215
0.2 mi·13 sec·Barstow Freeway
31
Continue on I 215
1.8 mi·2 min·San Bernardino Freeway
32
Take the exit
0.4 mi·52 sec
Exit 44AToward CA 66 West: 5th Street, Civic CenterUse the slight right lane.
33
Turn left onto CA 66
0.8 mi·1 min·West 5th Street
Use the left / straight / right lanes.
34
Arrive at destination
West 5th Street
Trip Plan
To make the most of this 7h 39m drive, consider an early morning departure from Antioch to avoid potential traffic, especially as you approach the Los Angeles basin. With two recommended stops, you can comfortably break up the 405.5 miles. Aim for a stop around the halfway point to refuel and stretch your legs. Pay attention to the 96% highway share; this means most of your travel will be at higher speeds, so ensure your vehicle is in good condition. The fuel cost estimate of $97 is based on the total distance, so budget accordingly.
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 2 meaningful breaks for fuel, food, and rest.
The halfway point lands around 202.8 miles from Antioch, CA, or about 3h 49m 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 89 miles or 1h 47m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 202.8 miles or 3h 49m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 6h 28m
Traffic, exits, and arrival timing usually matter more near San Bernardino, CA than in the middle of the route.
Before You Leave
+
Open the route before leaving Antioch, 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.
Day 1
Settle into the route from Antioch, CA
This is one driving day of about 405.5 miles and 7h 39m.
Your first comfortable stop window is around 89 miles from Antioch, CA.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 2 real breaks 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 25
5 decision points cluster between mile 327.6 and 404.4 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
7
327.6 mi into trip|~6h 7m in
Take the exit toward I 210 East: Pasadena
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Exit 161A
Toward I 210 East: Pasadena
8
352.3 mi into trip|~6h 36m in|I 210 / Foothill Freeway
Keep slight right at fork onto I 210 / Foothill Freeway toward CA 134 West, I 210 East: San Bernardino, Ventura
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Toward CA 134 West, I 210 East: San Bernardino,...
8
401.6 mi into trip|~7h 32m in
Take the exit toward I 215: Barstow, Riverside
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Exit 74
Toward I 215: Barstow, Riverside
8
401.8 mi into trip|~7h 33m in
Keep slight right at fork toward I 215 South: Riverside
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left / slight right lanes.
Exit 74
Toward I 215 South: Riverside
8
404.4 mi into trip|~7h 37m in
Take the exit toward CA 66 West: 5th Street, Civic Center
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 44A
Toward CA 66 West: 5th Street, Civic Center
Fuel & Cost
Regular Gas
$98.10 one way
$196.20 round trip
$6.15/gal25.4 MPG avg142 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$6.34
$101.20
$202.40
premium
$6.50
$103.71
$207.41
diesel
$6.28
$100.19
$200.39
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$98
Meals
$25–$50
Total
$123–$148
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 141.9 kg one way.
Prices: EIA weekly data, 2026-10-19.
Driving Electric?
About $43 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
121.7
1
$42.58
$19.46
Efficient EV
101.4
1
$35.48
$16.22
EV Truck/SUV
162.2
2
$56.77
$25.95
Gas CO2
142 kg
EV CO2
47 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 Oct 19, 2026
Origin
Antioch, CA
Late night
in Antioch on Wednesday
Local time
1:11 AM
PDT
Current temp
55°F
Mostly Clear
WSW 10 mph1% chanceLive forecast
Beach Hazards Statement
Beach Hazards Statement issued October 19 at 1:23AM PDT until October 20 at 9:00AM PDT by NWS San Diego CA
Beach Hazards Statement
Beach Hazards Statement issued October 18 at 12:31PM PDT until October 20 at 9:00AM PDT by NWS Los Angeles/Oxnard CA
Destination
San Bernardino, CA
Late night
in San Bernardino on Wednesday
Local time
1:11 AM
PDT
Current temp
62°F
Clear
0 mph0% chanceLive forecast
Beach Hazards Statement
Beach Hazards Statement issued October 19 at 1:23AM PDT until October 20 at 9:00AM PDT by NWS San Diego CA
Beach Hazards Statement
Beach Hazards Statement issued October 18 at 12:31PM PDT until October 20 at 9:00AM PDT by NWS Los Angeles/Oxnard 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.
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
7 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
7h 39m 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...
23 mi from route
~57 min detour
Free
near mile 321.6
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
~67 min detour
Free
near mile 265.7
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This route is almost entirely highway, with 96% of the 405.5 miles on major roads. You'll experience a longest stretch of 224.4 miles on the Westside Freeway before encountering any significant surface roads. Keep an eye out for the frequent exits and merging traffic typical of long freeway stretches in California. The transition from Westside Freeway to I 5 Truck is seamless, keeping you on high-speed roads for the vast majority of the trip.
96% highway — fuel and pacing are the main things to plan.
34 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?
10/10
This is a straightforward highway drive that stays mostly on Westside Freeway and Foothill Freeway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 327.6 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 25 significant decision points across 405.5 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 327.6 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 352.3 miles (I 210 / Foothill Freeway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 401.6 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
3,326 ft41 ft
Total Climb
3,923 ft
Total Descent
2,913 ft
Highest Point
3,326 ft
~289.7 mi in
Elevation Range
3,285 ft
Notable High Points
3,326 ft at ~289.7 miles+2,217 ft prominence
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from Antioch, CA to San Bernardino, CA, road signs begin pointing toward Ventura along the way.
Doable as a same-day drive at 7h 39m. Total distance: 405.5 miles.
Family Friendly
Moderate complexity with 2 natural rest stops along the way.
Solo Traveler
7h 39m 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.
Yes — we found about 35 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 San Bernardino, 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 35 rest areas along the route for bathroom stops.
The main spots that need attention: at 327.6 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 352.3 miles (I 210 / Foothill Freeway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 401.6 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, 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 7.7 hours each way, a round trip means 15.3 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at San Bernardino, CA before the return drive.
