Westmont, CA to San Jose, CA is 348.2 miles and takes about 6h 35m via Westside Freeway, CA 152, and I 5 Truck, with a fuel budget near $80 and enough daylight to finish in a day. This route keeps you within California's Pacific Coast region for its entirety. Expect a mostly highway-focused drive that's efficient for getting from point A to point B. With a drive time under seven hours, it's a manageable one-day trip, but consider starting early to make the most of daylight.
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
174.1 miles from Westmont, CA
A natural place for your longest stop of the day
, about 3h 17m into the drive
.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 6h 35m. Total distance: 348.2 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
6h 35m drive, plan rest stops for pacing.
Drive Character
This drive is overwhelmingly a highway experience, with 98% of the route utilizing major freeways. You'll spend the bulk of your time on the Westside Freeway, which accounts for the longest uninterrupted stretch at 182.5 miles. The transition to CA 152 and then I 5 Truck signifies a change in the freeway character, but the overall pace remains high. It’s designed for efficient travel, minimizing local roads and maximizing time on the open highway.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 29 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 182.5 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on Westside Freeway and CA 152. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 32.5 miles in near I 5 Truck.
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 24 significant decision points across 348.2 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: at 32.5 miles (I 5 Truck): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 92.5 miles (I 5 / Westside Freeway): Highway fork - watch signs carefully. Lane positioning matters here; at 336.2 miles (CA 85): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Critical Maneuvers
5 of 24 key points
These are the spots where you need to pay the most attention. Preview them before you drive.
9
32.5 mi into trip|~41m in|I 5 Truck
Keep slight right at fork onto I 5 Truck toward I 5 Truck North, CA 14 Truck
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Exit 161A
Toward I 5 Truck North, CA 14 Truck
7
92.5 mi into trip|~1h 50m in|I 5 / Westside Freeway
Keep slight right at fork onto I 5 / Westside Freeway toward I 5 North
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Toward I 5 North
9
336.2 mi into trip|~6h 20m in|CA 85
Keep slight right at fork onto CA 85 toward CA 85 North: Cupertino, Mountain View
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 377B
Toward CA 85 North: Cupertino, Mountain View
8
347 mi into trip|~6h 33m in
Keep slight left at fork toward CA 87 North: Santa Clara Street, Julian Street
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight left lane.
Toward CA 87 North: Santa Clara Street, Julian...
9
347.7 mi into trip|~6h 34m in
Keep slight right at fork toward Julian Street
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Exit 6B
Toward Julian Street
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 Westmont, CA to San Jose, CA, road signs begin pointing toward Hollister along the way.
Hollister
275 mi in|~5h 5m
Main Roads
Road
Distance
Duration
Westside Freeway
182.5 mi
3h 15m
CA 152
41.1 mi
51m
I 5 Truck
39.3 mi
45m
San Diego Freeway
26.3 mi
30m
Golden State Freeway
22.3 mi
25m
South Valley Freeway
19.9 mi
22m
CA 85
5.2 mi
6m
Guadalupe Parkway
4.3 mi
5m
Longest stretch:
Westside Freeway
— 182.5 mi, about 3h 15m
Turn-by-Turn Driving Directions
Step-by-step road directions between Westmont, CA and San Jose, CA.
1
Start on this road
169 ft·14 sec·this road
2
Turn right onto West 105th Street
0.4 mi·1 min·West 105th Street
Use the straight / right lanes.
3
At end of road, turn right onto South Western Avenue
0.3 mi·49 sec·South Western Avenue
4
Turn left onto West Century Boulevard
3.4 mi·6 min·West Century Boulevard
Use the left lane.
5
Take the ramp
0.2 mi·24 sec
Toward I 405 North: Santa Monica, San Diego Freeway
6
Merge onto I 405 ALT
0.2 mi·14 sec·I 405 ALT
7
Take the exit
0.2 mi·10 sec
Toward I 405 North: Santa Monica
8
Merge onto I 405
26 mi·30 min·San Diego Freeway
Use the straight lane.
9
Merge onto I 5 Truck
1.6 mi·1 min·I 5 Truck
Use the straight / slight right lanes.
10
Keep slight right at fork onto I 5 Truck
1.5 mi·1 min·I 5 Truck
Exit 161AToward I 5 Truck North, CA 14 TruckUse the straight / slight right lanes.
11
Keep slight left at fork onto I 5 Truck
36 mi·41 min·I 5 Truck
Use the straight / slight right lanes.
12
Keep slight left at fork onto I 5
22 mi·25 min·Golden State Freeway
Use the straight / slight right lanes.
13
Keep slight right at fork onto I 5
183 mi·3 hr 15 min·Westside Freeway
Toward I 5 NorthUse the straight / slight right lanes.
14
Take the exit
0.2 mi·26 sec
Exit 403BToward CA 152 West: Gilroy, Hollister, San Jose
15
Continue on CA 152; CA33
29 mi·33 min·CA 152; CA33
Use the straight lane.
16
Keep slight right at fork onto CA 152
12 mi·16 min·CA 152
17
Take the exit onto CA 152
0.5 mi·1 min·CA 152
Toward US 101 North: San Jose
18
Merge onto US 101; CA 152
20 mi·22 min·South Valley Freeway
Use the slight right lane.
19
Keep slight right at fork onto CA 85
5.2 mi·6 min·CA 85
Exit 377BToward CA 85 North: Cupertino, Mountain ViewUse the slight right lane.
20
Take the exit
0.6 mi·51 sec
Exit 5AToward CA 87 North: Downtown San JoseUse the straight / slight right lanes.
21
Continue on CA 87
4.3 mi·5 min·Guadalupe Parkway
Use the straight / slight right lanes.
22
Continue on CA 87
0.4 mi·29 sec·Guadalupe Freeway
Use the straight / slight right lanes.
23
Take the exit
0.2 mi·19 sec
Exit 6Toward CA 82Use the straight / slight right lanes.
24
Keep slight left at fork
0.5 mi·51 sec
Toward CA 87 North: Santa Clara Street, Julian StreetUse the slight left lane.
25
Keep slight left at fork
0.3 mi·35 sec
Toward CA 87 NorthUse the straight / slight right lanes.
26
Keep slight right at fork
0.2 mi·26 sec
Exit 6BToward Julian StreetUse the straight / slight right lanes.
27
Turn right onto West Saint James Street
0.2 mi·28 sec·West Saint James Street
Use the straight lane.
28
Turn left onto North Market Street
416 ft·8 sec·North Market Street
29
Arrive at destination
North Market Street
Trip Plan
Given the 6h 35m estimated drive time, departing Westmont in the morning is your best bet for completing this trip in a single day. The longest stretch without a major road change is 182.5 miles on the Westside Freeway, so plan your fuel stops accordingly before you hit that segment if you're concerned about range. While this is a single-day drive, the $80 fuel cost is an estimate, so monitor prices as you go. With only one recommended stop, you have a lot of flexibility in how you pace yourself.
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 174.1 miles from Westmont, CA, or about 3h 17m into the drive.
The longest continuous stretch on this route runs about 182.5 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 77 miles or 1h 32m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 174.1 miles or 3h 17m 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 21m
Traffic, exits, and arrival timing usually matter more near San Jose, CA than in the middle of the route.
Before You Leave
+
Open the route before leaving Westmont, 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 Westmont, CA
This is one driving day of about 348.2 miles and 6h 35m.
Your first comfortable stop window is around 77 miles from Westmont, 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 182.5 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 174.1 mi from Westmont, CA
· 3h 17m into the drive
Place data sourced from public business listings. Hours and availability may vary.
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...
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...
Park data from the National Park Service API. Alerts update every 2 hours.
Fuel & Cost
Regular Gas
$80.03 one way
$160.06 round trip
$5.84/gal25.4 MPG avg122 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$6.02
$82.47
$164.94
premium
$6.18
$84.68
$169.36
diesel
$5.61
$76.88
$153.76
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$80
Meals
$25–$50
Total
$105–$130
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 121.8 kg one way.
Prices: EIA weekly data, 2026-04-13.
EV Charging Along Route
5 DC fast chargers
· Coverage: fair
Tesla Supercharger
Granada Hills, California
Tesla
1 DCFC
Electric Vehicle Charging Station
Lebec, California
Other
1 DCFC
Tesla Supercharger
Lebec, California
Tesla
1 DCFC
Tesla Supercharger
Castaic, California
Tesla
1 DCFC
ChargePoint Charging Station
Lebec, California
ChargePoint
1 DCFC
Tesla: 3
Other: 1
ChargePoint: 1
Station data from NREL Alternative Fuel Stations database.
Driving Electric?
About $37 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
104.5
1
$36.56
$16.71
Efficient EV
87.1
0
$30.47
$13.93
EV Truck/SUV
139.3
1
$48.75
$22.28
Gas CO2
122 kg
EV CO2
41 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 16, 2026
Origin
Westmont, CA
Late night
in Westmont on Saturday
Local time
12:01 AM
PDT
Current temp
72°F
Unavailable
Live forecast
Destination
San Jose, CA
Late night
in San Jose on Saturday
Local time
12:01 AM
PDT
Current temp
44°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
28 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
6h 35m 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 Westmont, CA to San Jose, CA covers 348.2 miles and takes about 6h 35m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Westside Freeway, CA 152, 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 174.1 miles from Westmont, CA. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $80.03 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 24 significant decision points across 348.2 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: at 32.5 miles (I 5 Truck): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 92.5 miles (I 5 / Westside Freeway): Highway fork - watch signs carefully. Lane positioning matters here; at 336.2 miles (CA 85): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
On the drive from Westmont, CA to San Jose, CA, road signs begin pointing toward Hollister along the way.
How this page is built
Compiled by the Trip.ovh planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, NREL for EV charging, and NPS for national parks. See our methodology for refresh cadence and limitations.
