Origin
Lathrop, CA
Late night in Lathrop on Friday
Local time
3:29 AM
PDT
Current temp
51°F
Unavailable
Live forecast
Trip from Lathrop, CA to Fontana, CA
Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 17, 2026 · Editorial standards
Drive Time
6h 54m
Distance
373.9 mi
602 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$86
one way
EV Charging
Unknown
Best Time to Leave
4 AM
6h 43m
★
6 AM
6h 55m
8 AM
7h 18m
10 AM
7h 3m
12 PM
7h 1m
3 PM
7h 4m
5 PM
7h 17m
8 PM
6h 48m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Lathrop, CA
Wikimedia Commons
Fontana, CA
Wikimedia Commons
Trip Overview
The drive from Lathrop, CA to Fontana, CA covers 373.9 miles and takes about 6h 54m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on Westside Freeway, Foothill Freeway, I 5 Truck for much of the mileage, and the overall profile is highway-focused drive. The longest uninterrupted segment is about 241.6 miles on Westside Freeway. At current regular gas prices, budget about $85.94 one way before food or hotel costs.
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
187 miles from Lathrop, CA
A natural place for your longest stop of the day , about 3h 22m into the drive .
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 6h 54m. Total distance: 373.9 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
6h 54m drive, plan rest stops for pacing.
Drive Character
This is a 6h 54m highway drive covering 373.9 miles, with most of the trip on Westside Freeway and Foothill Freeway. The longest continuous stretch is about 241.6 miles on Westside Freeway.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 21 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 241.6 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 around 6.4 miles in near I 5 / Westside Freeway.
Driving Effort
7/10
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 373.9 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 6.4 miles (I 5 / Westside Freeway): Highway fork - watch signs carefully. Lane positioning matters here; at 243 miles (I 5 Truck): Highway fork - watch signs carefully. Lane positioning matters here; at 303.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
Critical Maneuvers
5 of 18 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
6
6.4 mi into trip
|
~9m in
|
I 5 / Westside Freeway
Keep slight left at fork onto I 5 / Westside Freeway
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
6
243 mi into trip
|
~4h 22m in
|
I 5 Truck
Keep slight right at fork onto I 5 Truck
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
7
303.4 mi into trip
|
~5h 31m 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
328 mi into trip
|
~6h 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
370.6 mi into trip
|
~6h 49m 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 Lathrop, CA to Fontana, CA, road signs begin pointing toward Ventura along the way.
Ventura
328 mi in
|
~6h
|
via I 210
Main Roads
| Road | Distance | Duration |
|---|---|---|
| Westside Freeway | 241.6 mi | 4h 18m |
| Foothill Freeway | 67 mi | 1h 17m |
| I 5 Truck | 58.4 mi | 1h 6m |
| Sierra Avenue | 3 mi | 4m |
| Golden State Freeway | 2 mi | 2m |
| Lathrop Road | 0.7 mi | 1m |
| 5th Street | 0.3 mi | 1m |
| East J Street | <0.1 mi | <1m |
Longest stretch:
Westside Freeway
— 241.6 mi, about 4h 18m
Turn-by-Turn Driving Directions
Step-by-step road directions between Lathrop, CA and Fontana, CA.
1
Start on East J Street
464 ft
·
22 sec
·
East J Street
2
Turn right onto 5th Street
0.3 mi
·
1 min
·
5th Street
3
Turn left onto Lathrop Road
0.7 mi
·
1 min
·
Lathrop Road
Use the straight lane.
4
Turn left
0.4 mi
·
45 sec
Use the left lane.
5
Merge onto I 5
4.3 mi
·
4 min
·
Westside Freeway
6
Keep slight left at fork onto I 5
0.8 mi
·
48 sec
·
Westside Freeway
7
Keep slight left at fork onto I 5
237 mi
·
4 hr 13 min
·
Westside Freeway
Use the straight / slight right lanes.
8
Keep slight right at fork onto I 5 Truck
58 mi
·
1 hr 6 min
·
I 5 Truck
Use the straight / slight right lanes.
9
Keep slight left at fork onto I 5
2.0 mi
·
2 min
·
Golden State Freeway
Use the straight / slight right lanes.
10
Take the exit
0.3 mi
·
17 sec
Exit 161A
Toward I 210 East: Pasadena
Use the slight right lane.
11
Continue on I 210
24 mi
·
28 min
·
Foothill Freeway
Use the straight / slight right lanes.
12
Keep slight right at fork onto I 210
19 mi
·
22 min
·
Foothill Freeway
Toward CA 134 West, I 210 East: San Bernardino, Ventura
Use the slight right lane.
13
Keep slight right at fork onto I 210
2.9 mi
·
3 min
·
Foothill Freeway
Use the straight / slight right lanes.
14
Keep slight right at fork onto CA 210
1.4 mi
·
1 min
·
Foothill Freeway
Use the straight / slight right lanes.
15
Keep slight right at fork onto CA 210
1.2 mi
·
1 min
·
Foothill Freeway
Use the straight / slight right lanes.
16
Keep slight right at fork onto CA 210
1.8 mi
·
2 min
·
Foothill Freeway
Use the straight / slight right lanes.
17
Keep slight right at fork onto CA 210
16 mi
·
18 min
·
Foothill Freeway
Use the straight / slight right lanes.
18
Take the exit
0.3 mi
·
46 sec
Exit 67
Toward Sierra Avenue
Use the straight / slight right lanes.
19
Turn right onto Sierra Avenue
3.0 mi
·
4 min
·
Sierra Avenue
Use the left / right lanes.
20
Turn left onto Merrill Avenue
205 ft
·
4 sec
·
Merrill Avenue
Use the left lane.
21
Arrive at destination
Merrill Avenue
Trip Plan
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 187 miles from Lathrop, CA, or about 3h 22m into the drive.
The longest continuous stretch on this route runs about 241.6 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 82 miles or 1h 30m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 187 miles or 3h 22m 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 44m
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 Lathrop, 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 Lathrop, CA
This is one driving day of about 373.9 miles and 6h 54m.
Your first comfortable stop window is around 82 miles from Lathrop, 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 241.6 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 187 mi from Lathrop, CA · 3h 22m into the drive
Mid-route town
Meal stop
187 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
Pacing Suggestions
Fuel and coffee
A short stop after about 82 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 187 miles from Lathrop, CA, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before Westside Freeway if your tank is already low. That segment runs about 241.6 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.
Fuel & Cost
Regular Gas
$85.94 one way
$171.88 round trip
$5.84/gal
25.4 MPG avg
131 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $6.02 | $88.56 | $177.12 |
| premium | $6.18 | $90.93 | $181.86 |
| diesel | $5.61 | $82.55 | $165.10 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$86
Meals
$25–$50
Total
$111–$136
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 130.8 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $39 in charging · 1 stop · 66% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 112.2 | 1 | $39.26 | $17.95 |
| Efficient EV | 93.5 | 1 | $32.72 | $14.96 |
| EV Truck/SUV | 149.6 | 1 | $52.35 | $23.93 |
Gas CO2
131 kg
EV CO2
44 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.
Destination
Fontana, CA
Late night in Fontana on Friday
Local time
3:29 AM
PDT
Current temp
74°F
Patchy Fog then Mostly Sunny
SW 0 to 15 mph
0% chance
Live forecast
Freeze Warning
Freeze Warning issued April 16 at 8:38AM PDT until April 16 at 9:00AM PDT by NWS Eureka CA
Freeze Warning
Freeze Warning issued April 16 at 8:38AM PDT until April 16 at 9:00AM PDT by NWS Eureka 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
23 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
6h 54m 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 Lathrop, CA to Fontana, CA covers 373.9 miles and takes about 6h 54m 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 187 miles from Lathrop, CA. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $85.94 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 1 meaningful break 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 18 significant decision points across 373.9 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: at 6.4 miles (I 5 / Westside Freeway): Highway fork - watch signs carefully. Lane positioning matters here; at 243 miles (I 5 Truck): Highway fork - watch signs carefully. Lane positioning matters here; at 303.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
On the drive from Lathrop, CA to Fontana, CA, road signs begin pointing toward Ventura along the way.
How this page is built
Compiled and maintained by the Trip.ovh planning team at COD Solutions Oy (Helsinki). Each route is built from authoritative open government and mapping datasets rather than crowdsourced reviews. Distances and geometry come from OSRM over OpenStreetMap. Fuel cost uses EIA weekly regional averages. Pages are published only after passing our data-quality checks; our methodology page documents refresh cadence, editorial standards, and known limitations.
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