Fremont, CA to Westmont, CA is 364.1 miles and takes about 6h 55m via Westside Freeway, I 5 Truck, and Pacheco Pass Highway, with a fuel budget near $83 and enough daylight to finish in a day. This drive primarily traverses the Pacific Coast region, starting and ending within California. Expect a route that is mostly highway, making for efficient travel between these two points. It's a straightforward option if you're looking to cover ground quickly without extensive detours.
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
182.1 miles from Fremont, CA
A natural place for your longest stop of the day
, about 3h 29m into the drive
.
Main Roads
Road
Distance
Duration
Westside Freeway
181.1 mi
3h 14m
I 5 Truck
58.6 mi
1h 7m
Pacheco Pass Highway
40.6 mi
50m
Bayshore Freeway
32.3 mi
37m
I 405 Truck
23 mi
26m
Nimitz Freeway
13.3 mi
15m
Golden State Freeway
4.1 mi
4m
West Century Boulevard
4 mi
7m
Longest stretch:
Westside Freeway
— 181.1 mi, about 3h 14m
Traffic on I-5
Hour-of-day weekday pattern from 77 FHWA count stations on your route.
Peak
2 PM
~2,024 veh/hr typical
· worst 2,763
Quietest
2 AM
~371 veh/hr
Peak-to-quiet ratio
5.5×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 44 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 Westmont, 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 JoseUse 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 AngelesUse 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
4.1 mi·4 min·Golden State Freeway
Use the straight / slight right lanes.
15
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.
16
Keep slight right at fork onto I 405 Truck
23 mi·26 min·I 405 Truck
Use the straight / slight right lanes.
17
Keep slight right at fork onto I 405
3.1 mi·3 min·San Diego Freeway
Use the straight / slight right lanes.
18
Take the exit
0.1 mi·9 sec
Exit 46Toward Century Boulevard, Los Angeles International Airport, Imperial HighwayUse the straight / slight right lanes.
19
Continue on this road
370 ft·4 sec·this road
Exit 46
20
Keep slight right at fork
0.1 mi·26 sec
Exit 46Toward South La Cienega Boulevard, Century Boulevard West, Los Angeles International AirportUse the slight right lane.
21
Turn left onto South La Cienega Boulevard
0.2 mi·22 sec·South La Cienega Boulevard
Use the left lane.
22
Turn left onto West Century Boulevard
4.0 mi·7 min·West Century Boulevard
Use the left lane.
23
Turn right onto South Normandie Avenue
0.3 mi·39 sec·South Normandie Avenue
24
Turn right onto West 105th Street
0.1 mi·32 sec·West 105th Street
25
Turn right
169 ft·12 sec
26
Arrive at destination
Trip Plan
Given the 6h 55m estimated drive time, leaving in the morning is your best bet to complete this trip within daylight hours. With only one recommended stop, plan for a mid-drive break to stretch and refuel. Keep an eye on your fuel gauge, especially before embarking on the longest stretch of 181.1 miles on the Westside Freeway. Given the efficient highway nature of this route, you have the flexibility to depart later if needed, but aim to avoid peak traffic near urban areas. Ensure your vehicle is in good condition for the extended driving period.
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 182.1 miles from Fremont, CA, or about 3h 29m 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 80 miles or 1h 37m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 182.1 miles or 3h 29m 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 42m
Traffic, exits, and arrival timing usually matter more near Westmont, 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.
Day 1
Settle into the route from Fremont, CA
This is one driving day of about 364.1 miles and 6h 55m.
Your first comfortable stop window is around 80 miles from Fremont, 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 181.1 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 20
5 decision points cluster between mile 15.2 and 359.4 — 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
8
332.8 mi into trip|~6h 15m 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
8
359.1 mi into trip|~6h 45m in
Take the exit toward Century Boulevard, Los Angeles International Airport, Imperial Highway
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 46
Toward Century Boulevard, Los Angeles Internati...
10
359.3 mi into trip|~6h 45m in
Keep slight right at fork toward South La Cienega Boulevard, Century Boulevard West, Los Angeles International Airport
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 46
Toward South La Cienega Boulevard, Century Boul...
7
359.4 mi into trip|~6h 46m in|South La Cienega Boulevard
Turn left onto South La Cienega Boulevard
Lane positioning matters here
Use the left lane.
Fuel & Cost
Regular Gas
$82.52 one way
$165.05 round trip
$5.76/gal25.4 MPG avg127 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$5.96
$85.38
$170.75
premium
$6.09
$87.33
$174.65
diesel
$5.40
$77.45
$154.90
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$83
Meals
$25–$50
Total
$108–$133
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 127.4 kg one way.
Prices: EIA weekly data, 2026-04-20.
Station data from NREL Alternative Fuel Stations database.
Driving Electric?
About $38 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
109.2
1
$38.23
$17.48
Efficient EV
91
1
$31.86
$14.56
EV Truck/SUV
145.6
1
$50.97
$23.30
Gas CO2
127 kg
EV CO2
43 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 26, 2026
Origin
Fremont, CA
Late night
in Fremont on Sunday
Local time
12:47 AM
PDT
Current temp
51°F
Slight Chance Drizzle
SSW 3 to 7 mph23% chanceLive forecast
Wind Advisory
Wind Advisory issued April 25 at 9:52PM PDT until April 26 at 11:00AM PDT by NWS San Diego CA
Wind Advisory
Wind Advisory issued April 25 at 6:51PM PDT until April 27 at 5:00AM PDT by NWS Hanford CA
Destination
Westmont, CA
Late night
in Westmont on Sunday
Local time
12:47 AM
PDT
Current temp
55°F
Rain Showers Likely
W 10 to 15 mph63% chanceLive forecast
Wind Advisory
Wind Advisory issued April 25 at 9:52PM PDT until April 26 at 11:00AM PDT by NWS San Diego CA
Wind Advisory
Wind Advisory issued April 25 at 6:51PM PDT until April 27 at 5:00AM PDT by NWS Hanford 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
4 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 55m 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...
19 mi from route
~47 min detour
Free
near mile 339
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 263.7
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...
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This trip is predominantly highway driving, with 87% of the 364.1 miles on major roadways. You'll encounter a significant stretch of 181.1 miles on the Westside Freeway before transitioning to other main roads. Expect continuous cruising for extended periods, characteristic of routes with a high highway percentage. The transition off the main highways will likely involve more varied traffic patterns.
87% 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: 181.1 mi on Westside Freeway.
How Hard Is This Drive?
9/10
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 Effort9/10
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 20 significant decision points across 364.1 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 332.8 miles (I 5 Truck): Highway fork - watch signs carefully. Lane positioning matters here; at 359.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
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
Doable as a same-day drive at 6h 55m. Total distance: 364.1 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
6h 55m 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.
Yes — we found about 26 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 Westmont, 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. There are 26 rest areas along the route for bathroom stops.
The main spots that need attention: at 15.2 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 332.8 miles (I 5 Truck): Highway fork - watch signs carefully. Lane positioning matters here; at 359.1 miles: Exit ramp - move to the correct lane early. 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 6.9 hours each way, a round trip means 13.9 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Westmont, CA before the return drive.
