This 398.2-mile journey from Antioch, CA to Fontana, CA is designed as a single-day adventure, estimated to take about 7 hours and 31 minutes of driving time. Primarily utilizing the Westside Freeway and Foothill Freeway, with a segment on I 5 Truck, this route is overwhelmingly highway-focused, with 95% of the drive on major freeways. With a projected fuel cost of $92 and a plan for 2 stops, it's a straightforward trip connecting two points within the Pacific Coast region. This drive offers a direct path, making it a manageable, albeit long, day trip for those looking to cover ground efficiently.
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
199.1 miles from Antioch, CA
A natural place for your longest stop of the day
, about 3h 45m into the drive
.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 7h 31m. Total distance: 398.2 miles.
Family Friendly
Moderate complexity with 2 natural rest stops along the way.
Solo Traveler
7h 31m drive, plan rest stops for pacing.
Drive Character
Expect a highway-focused drive for the vast majority of this 398.2-mile trip, as 95% of the route utilizes major freeways like the Westside Freeway and Foothill Freeway. You'll encounter a substantial uninterrupted stretch of 224.4 miles on the Westside Freeway, meaning extended periods of consistent driving. While largely a freeway experience, the transition between these major arteries will define the character of the drive. This profile suggests a consistent pace, allowing you to maintain speed for much of the journey.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 31 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
Westside Freeway is the longest continuous segment at about 224.4 miles.
How Hard Is This Drive?
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 early in the drive near A 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 23 significant decision points across 398.2 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 (A Street): Lane positioning matters here; at 0.5 miles: Lane positioning matters here; at 327.6 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
Critical Maneuvers
5 of 23 key points
These are the spots where you need to pay the most attention. Preview them before you drive.
6
0 mi into trip|~0m in|A Street
Turn left onto A Street
Lane positioning matters here
Use the left lane.
6
0.5 mi into trip|~1m in
Turn left toward CA 4 East: Stockton
Lane positioning matters here
Use the left lane.
Toward CA 4 East: Stockton
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,...
7
394.8 mi into trip|~7h 25m in
Take the exit toward Sierra Avenue
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / slight right lanes.
Exit 67
Toward Sierra Avenue
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 Fontana, CA, road signs begin pointing toward Ventura along the way.
Ventura
352.3 mi in|~6h 36m|via I 210
Main Roads
Road
Distance
Duration
Westside Freeway
224.4 mi
4h
Foothill Freeway
67 mi
1h 17m
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
Turn-by-Turn Driving Directions
Step-by-step road directions between Antioch, CA and Fontana, 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
16 mi·18 min·Foothill Freeway
Use the straight / slight right lanes.
28
Take the exit
0.3 mi·46 sec
Exit 67Toward Sierra AvenueUse the straight / slight right lanes.
29
Turn right onto Sierra Avenue
3.0 mi·4 min·Sierra Avenue
Use the left / right lanes.
30
Turn left onto Merrill Avenue
205 ft·4 sec·Merrill Avenue
Use the left lane.
31
Arrive at destination
Merrill Avenue
Trip Plan
Given the 7-hour 31-minute estimated duration, consider an early morning departure from Antioch, CA, to maximize daylight and minimize potential traffic. Plan your two stops strategically, perhaps around the halfway point or after completing the longest 224.4-mile stretch on the Westside Freeway, to break up the drive. Keep an eye on your fuel levels, as this route is estimated to cost $92 in fuel. This is a trip best tackled with a full tank to start, ensuring you can comfortably reach your destination in Fontana, CA.
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 199.1 miles from Antioch, CA, or about 3h 45m 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 88 miles or 1h 46m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 199.1 miles or 3h 45m 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 20m
Traffic, exits, and arrival timing usually matter more near Fontana, 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 398.2 miles and 7h 31m.
Your first comfortable stop window is around 88 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.
Halfway Point
Midpoint
About 199.1 mi from Antioch, CA
· 3h 45m into the drive
The midpoint is around 199.1 miles from Antioch, CA, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel check
Top up before Westside Freeway if your tank is already low. That segment runs about 224.4 miles.
Arriving in Fontana, CA
The final approach into Fontana, CA usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.
Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around Fontana, CA.
After long uninterrupted mileage, take five minutes before the last urban segment to reset and refocus on exits, merges, and city traffic.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
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
~58 min detour
Free
near mile 329.5
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...
28 mi from route
~71 min detour
Free
near mile 260.9
Park data from the National Park Service API. Alerts update every 2 hours.
Fuel & Cost
Regular Gas
$91.52 one way
$183.05 round trip
$5.84/gal25.4 MPG avg139 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$6.02
$94.31
$188.63
premium
$6.18
$96.84
$193.68
diesel
$5.61
$87.92
$175.84
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$92
Meals
$25–$50
Total
$117–$142
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 139.3 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $42 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
119.5
1
$41.81
$19.11
Efficient EV
99.6
1
$34.84
$15.93
EV Truck/SUV
159.3
1
$55.75
$25.48
Gas CO2
139 kg
EV CO2
47 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 Apr 15, 2026
Origin
Antioch, CA
Night
in Antioch on Thursday
Local time
9:48 PM
PDT
Current temp
--
Unavailable
Destination
Fontana, CA
Night
in Fontana on Thursday
Local time
9:48 PM
PDT
Current temp
76°F
Unavailable
Live 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
7h 31m 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.
Frequently Asked Questions
The drive from Antioch, CA to Fontana, CA covers 398.2 miles and takes about 7h 31m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Westside Freeway, Foothill Freeway, I 5 Truck. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 199.1 miles from Antioch, CA. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $91.52 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Start early — leave by 6-7 AM to arrive at a reasonable hour. This is a long drive — plan for a morning departure or consider splitting it into two days.
Plan about 2 meaningful breaks for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
This is a demanding drive. With 23 significant decision points across 398.2 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.
The main spots that need attention: near the start (A Street): Lane positioning matters here; at 0.5 miles: Lane positioning matters here; at 327.6 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
On the drive from Antioch, CA to Fontana, CA, road signs begin pointing toward Ventura along the way.
Yes. Nearby national parks include Port Chicago Naval Magazine National Memorial, Santa Monica Mountains National Recreation Area and César E. Chávez National Monument.
