Origin
Fremont, CA
Evening in Fremont on Saturday
Local time
8:30 PM
PDT
Current temp
61°F
Unavailable
Live forecast
Trip from Fremont, CA to Ontario, CA
Pin this tripCompiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Sep 6, 2026 · Editorial standards
Drive Time
7h 25m
Distance
390.8 mi
629 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$87
one way
EV Charging
Unknown
Best Time to Leave
4 AM
7h 15m
★
6 AM
7h 26m
8 AM
7h 46m
10 AM
7h 33m
12 PM
7h 31m
3 PM
7h 34m
5 PM
7h 45m
8 PM
7h 19m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Fremont, CA
Wikimedia Commons
Ontario, CA
Wikimedia Commons
Trip Overview
Fremont, CA to Ontario, CA is 390.8 miles and takes about 7h 25m via Westside Freeway, I 5 Truck, and Foothill Freeway, with a fuel budget near $86 and enough daylight to finish in a day. This drive takes you across California, moving from the Pacific Coast region into another part of the same region. With 88% of the route on highways, expect a fairly direct trip. It's a solid option for a single-day drive if you're 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
195.4 miles from Fremont, CA
A natural place for your longest stop of the day , about 3h 43m into the drive .
Main Roads
| Road | Distance | Duration |
|---|---|---|
| Westside Freeway | 181.1 mi | 3h 14m |
| I 5 Truck | 58.4 mi | 1h 6m |
| Foothill Freeway | 44 mi | 50m |
| Pacheco Pass Highway | 40.6 mi | 50m |
| Bayshore Freeway | 32.3 mi | 37m |
| Nimitz Freeway | 13.3 mi | 15m |
| San Bernardino Freeway | 6.9 mi | 7m |
| Orange Freeway | 3.4 mi | 3m |
Longest stretch:
Westside Freeway
— 181.1 mi, about 3h 14m
Traffic on I-5
Hour-of-day weekday pattern from 138 FHWA count stations on your route.
Peak
2 PM
~1,759 veh/hr typical · worst 2,714
Quietest
2 AM
~377 veh/hr
Peak-to-quiet ratio
4.7×
busier at peak than in the quiet hours
12a
6a
noon
6p
11p
Averaged across 80 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 Fremont, CA and Ontario, CA.
1
Start on Mowry Avenue
109 ft
·
4 sec
·
Mowry Avenue
2
Continue on Mowry Avenue
1.4 mi
·
3 min
·
Mowry Avenue
Use the left lane.
3
Continue on Mowry Avenue
0.2 mi
·
23 sec
·
Mowry Avenue
4
Take the ramp
0.3 mi
·
40 sec
Toward I 880 South: San Jose
Use the right lane.
5
Merge onto I 880
13 mi
·
15 min
·
Nimitz Freeway
Use the straight / slight right lanes.
6
Take the exit
0.1 mi
·
34 sec
Toward US 101 South: Los Angeles
Use the straight / right lanes.
7
Merge onto US 101
32 mi
·
37 min
·
Bayshore Freeway
Use the straight / right lanes.
8
Take the exit onto CA 152
0.3 mi
·
39 sec
·
CA 152
Toward CA 152 East: 10th Street, Pacheco Pass Road
9
Turn left onto CA 152
353 ft
·
12 sec
·
East 10th Street
10
Continue on CA 152
41 mi
·
50 min
·
Pacheco Pass Highway
11
Take the exit
0.6 mi
·
1 min
Toward I 5: Los Angeles
12
Merge onto I 5
181 mi
·
3 hr 14 min
·
Westside Freeway
Use the straight / slight right lanes.
13
Keep slight right at fork onto I 5 Truck
58 mi
·
1 hr 6 min
·
I 5 Truck
Use the straight / slight right lanes.
14
Keep slight left at fork onto I 5
2.0 mi
·
2 min
·
Golden State Freeway
Use the straight / slight right lanes.
15
Take the exit
0.3 mi
·
17 sec
Exit 161A
Toward I 210 East: Pasadena
Use the slight right lane.
16
Continue on I 210
24 mi
·
28 min
·
Foothill Freeway
Use the straight / slight right lanes.
17
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.
18
Keep slight right at fork onto I 210
0.5 mi
·
32 sec
·
Foothill Freeway
19
Take the exit
0.9 mi
·
1 min
Exit 44A
Toward CA 57 South: Santa Ana
Use the slight right lane.
20
Continue on CA 57
3.4 mi
·
3 min
·
Orange Freeway
Use the straight / slight right lanes.
21
Take the exit
0.2 mi
·
22 sec
Exit 22A; 22B
Toward I 10 East, I 10 West: San Bernardino, Los Angeles
Use the straight / slight right lanes.
22
Keep slight left at fork
0.7 mi
·
1 min
Exit 22B
Toward I 10 East: San Bernardino Freeway, San Bernardino
Use the slight left / slight right lanes.
23
Merge onto I 10
1.9 mi
·
2 min
·
San Bernardino Freeway
Use the straight / slight right lanes.
24
Keep slight right at fork onto I 10
4.0 mi
·
4 min
·
San Bernardino Freeway
Use the straight / slight right lanes.
25
Keep slight left at fork onto I 10 EXPR
1.7 mi
·
1 min
·
I-10 Metro ExpressLanes
Use the slight left lane.
26
Take the exit
217 ft
·
5 sec
Use the straight / slight right lanes.
27
Merge onto I 10
1.0 mi
·
1 min
·
San Bernardino Freeway
28
Take the exit
0.2 mi
·
32 sec
Toward CA 83: Ontario, Upland
Use the straight / slight right lanes.
29
Turn right onto North Euclid Avenue
1.7 mi
·
2 min
·
North Euclid Avenue
30
Turn right onto West Transit Street
376 ft
·
18 sec
·
West Transit Street
31
Turn right onto South Laurel Avenue
246 ft
·
14 sec
·
South Laurel Avenue
32
Turn right onto West Holt Boulevard
455 ft
·
11 sec
·
West Holt Boulevard
33
Arrive at destination
Holt Boulevard
Trip Plan
Given the 7h 25m estimated duration, leaving Fremont early in the morning is recommended to make the most of daylight and avoid potential afternoon traffic. With two suggested stops, you can break up the 390.8 miles comfortably. The longest stretch on the Westside Freeway is over 180 miles, so plan your fuel and rest stops accordingly. The $86 fuel estimate is helpful for budgeting, and keeping an eye on your fuel gauge as you pass through less populated areas will be wise.
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 195.4 miles from Fremont, CA, or about 3h 43m into the drive.
The longest continuous stretch on this route runs about 181.1 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 86 miles or 1h 45m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 195.4 miles or 3h 43m 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 13m
Traffic, exits, and arrival timing usually matter more near Ontario, CA than in the middle of the route.
Before You Leave
+
Open the route before leaving Fremont, 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 Fremont, CA
This is one driving day of about 390.8 miles and 7h 25m.
Your first comfortable stop window is around 86 miles from Fremont, 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 181.1 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
195 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 86 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 195.4 miles from Fremont, 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 181.1 miles.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Heads-up: tricky spots
5 of 265 decision points cluster between mile 15.2 and 379.3 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
7
15.2 mi into trip
|
~19m in
Take the exit toward US 101 South: Los Angeles
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / right lanes.
Toward US 101 South: Los Angeles
7
330.7 mi into trip
|
~6h 12m 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
355.4 mi into trip
|
~6h 41m 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
379.2 mi into trip
|
~7h 9m in
Take the exit toward I 10 East, I 10 West: San Bernardino, Los Angeles
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 22A; 22B
Toward I 10 East, I 10 West: San Bernardino, Lo...
9
379.3 mi into trip
|
~7h 10m in
Keep slight left at fork toward I 10 East: San Bernardino Freeway, San Bernardino
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight left / slight right lanes.
Exit 22B
Toward I 10 East: San Bernardino Freeway, San B...
Fuel & Cost
Regular Gas
$86.64 one way
$173.28 round trip
$5.63/gal
25.4 MPG avg
137 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $5.81 | $89.41 | $178.81 |
| premium | $5.98 | $92.05 | $184.11 |
| diesel | $5.60 | $86.15 | $172.29 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$87
Meals
$25–$50
Total
$112–$137
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 136.7 kg one way. Prices: EIA weekly data, 2026-08-31.
Driving Electric?
About $41 in charging · 1 stop · 66% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 117.2 | 1 | $41.03 | $18.76 |
| Efficient EV | 97.7 | 1 | $34.20 | $15.63 |
| EV Truck/SUV | 156.3 | 1 | $54.71 | $25.01 |
Gas CO2
137 kg
EV CO2
46 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
Ontario, CA
Evening in Ontario on Saturday
Local time
8:30 PM
PDT
Current temp
93°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.
Temperature spread
32 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 25m 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.
Santa Monica Mountains National Recreation Area
National Recreation Area
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...
24 mi from route
~59 min detour
Free
near mile 323.4
Park Closure: Solstice Canyon Trail Weekday Closure for Repairs
César E. Chávez National Monument
National Monument
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 269.5
View on nps.gov
San Francisco Maritime National Historical Park
National Historical Park
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...
30 mi from route
~75 min detour
Free
View on nps.gov
Park data from the National Park Service API. Alerts update every 2 hours.
What kind of drive is this?
This trip is predominantly highway driving, with 88% of the 390.8 miles spent on major freeways. You'll encounter the longest continuous stretch of highway on the Westside Freeway, covering 181.1 miles. Expect plenty of freeway miles, with the transition to surface roads occurring towards the end of your drive. The high highway percentage suggests a focus on speed and directness, with urban merging likely as you approach your destination.
88% highway — fuel and pacing are the main things to plan.
33 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 181.1 mi on Westside Freeway.
How Hard Is This Drive?
10/10
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 around 15.2 miles in.
Driving Effort
10/10
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 26 significant decision points across 390.8 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 15.2 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 330.7 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 355.4 miles (I 210 / Foothill Freeway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Elevation Profile
Hilly terrain with moderate elevation changes
2,853 ft
55 ft
Total Climb
3,693 ft
Total Descent
2,746 ft
Highest Point
2,853 ft
~307 mi in
Elevation Range
2,799 ft
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
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 Fremont, CA to Ontario, CA, road signs begin pointing toward Ventura along the way.
Ventura
355.4 mi in
|
~6h 41m
|
via I 210
About the Cities
Starting in Fremont, CA
Full guide →Founded 1956
Fremont is a suburban city in the southern part of the East Bay of the San Francisco Bay Area; it is the 4th largest city in the Bay Area by population. Fremont is in the southern part of Alameda County, California, between Union City to the north, Sunol and the hills to the east, Milpitas and Santa Clara County to the south, and the San Francisco Bay to the west. The city of Newark, near the edge of the Bay, is surrounded by the city of Fremont. Fremont industry is not particularly large relative to other parts of the Bay Area, but neither is it a bedroom community. Many people in Fremont work locally in the electronics and high-tech industry, while many others commute to Silicon Valley or San Francisco locations for work.
Top landmarks
- • Mission San José — 18th-century Spanish mission in Fremont, California
- • Ardenwood Historic Farm — human settlement in California, United States of America
- • Niles Depot Museum — railway museum in Niles, California
Arriving in Ontario, CA
Full guide →Ontario is in San Bernardino County and the Southern California region, more than 35 miles (50 km) east of Los Angeles. From a traveler's perspective, Ontario is noteworthy mainly as the home of a large mall and the Ontario International Airport, a less crowded alternative to Los Angeles International Airport (LAX) and the main airport serving the Inland Empire.
Top landmarks
- • Frankish Building — building in Ontario, United States of America
- • Ontario State Bank Block — bank building in Ontario, California
City content from Wikivoyage (CC BY-SA 4.0) and Wikidata (CC0).
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 7h 25m. Total distance: 390.8 miles.
Family Friendly
Moderate complexity with 2 natural rest stops along the way.
Solo Traveler
7h 25m drive, plan rest stops for pacing.
Frequently Asked Questions
The longest stretch is about 181.1 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 Ontario, 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. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
The main spots that need attention: at 15.2 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 330.7 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 355.4 miles (I 210 / Foothill Freeway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Yes — Santa Monica Mountains National Recreation Area, César E. Chávez National Monument and San Francisco Maritime National Historical Park. See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 7.4 hours each way, a round trip means 14.9 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Ontario, CA before the return drive.
How this page is built
Compiled by the US Trip Planner planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, USGS 3DEP for elevation, NPS for national parks, and FHWA TMAS for hourly traffic volumes. See our methodology for refresh cadence and limitations.
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