Fremont, CA to Monrovia, CA is 366.1 miles and takes about 6h 55m via Westside Freeway, I 5 Truck, and Pacheco Pass Highway, with a fuel budget near $88 and enough daylight to finish in a day. This route stays within California, traversing the Pacific Coast region on both ends. For the most part, you'll be on highways, making it a straightforward drive. With a single recommended stop and a drive time under seven hours, this trip is well-suited for a single-day adventure.
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
183.1 miles from Fremont, CA
A natural place for your longest stop of the day
, about 3h 30m into the drive
.
Main Roads
Road
Distance
Duration
Westside Freeway
181.1 mi
3h 14m
I 5 Truck
58.4 mi
1h 6m
Pacheco Pass Highway
40.6 mi
50m
Foothill Freeway
33.9 mi
39m
Bayshore Freeway
32.3 mi
37m
Nimitz Freeway
13.3 mi
15m
Golden State Freeway
2 mi
2m
Mowry Avenue
1.6 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
~1,524 veh/hr typical
· worst 2,324
Quietest
2 AM
~316 veh/hr
Peak-to-quiet ratio
4.8×
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 Monrovia, 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
2.0 mi·2 min·Golden State Freeway
Use the straight / slight right lanes.
15
Take the exit
0.3 mi·17 sec
Exit 161AToward I 210 East: PasadenaUse 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
9.5 mi·10 min·Foothill Freeway
Toward CA 134 West, I 210 East: San Bernardino, VenturaUse the slight right lane.
18
Take the exit
0.2 mi·29 sec
Exit 34Toward Myrtle AvenueUse the straight / slight right lanes.
19
Turn left onto South Myrtle Avenue
0.9 mi·2 min·South Myrtle Avenue
Use the left / straight / right lanes.
20
Turn right onto East Lime Avenue
0.1 mi·27 sec·East Lime Avenue
21
Arrive at destination
East Lime Avenue
Trip Plan
Given the 6h 55m estimated drive time and 366.1 miles, leaving in the morning is your best bet to arrive before dark. You'll only need about one planned stop for this trip, so keep it brief. Be aware of the $88 fuel cost and plan your refueling accordingly, especially during the longest stretch on the Westside Freeway. Since this is a manageable single-day drive, you have flexibility; consider departing mid-morning to avoid early rush hour traffic out of Fremont.
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 183.1 miles from Fremont, CA, or about 3h 30m 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 81 miles or 1h 38m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 183.1 miles or 3h 30m 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 Monrovia, 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 366.1 miles and 6h 55m.
Your first comfortable stop window is around 81 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 15
5 decision points cluster between mile 1.6 and 364.9 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
1.6 mi into trip|~3m in
Take the ramp toward I 880 South: San Jose
Lane positioning matters here
Use the right lane.
Toward I 880 South: San Jose
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,...
7
364.9 mi into trip|~6h 52m in
Take the exit toward Myrtle Avenue
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / slight right lanes.
Exit 34
Toward Myrtle Avenue
Fuel & Cost
Regular Gas
$76.59 one way
$153.19 round trip
$5.31/gal25.4 MPG avg128 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$5.52
$79.55
$159.09
premium
$5.67
$81.65
$163.30
diesel
$4.80
$69.13
$138.25
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$77
Meals
$25–$50
Total
$102–$127
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 128.1 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $38 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
109.8
1
$38.44
$17.57
Efficient EV
91.5
1
$32.03
$14.64
EV Truck/SUV
146.4
1
$51.25
$23.43
Gas CO2
128 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 Jul 17, 2026
Origin
Fremont, CA
Morning
in Fremont on Tuesday
Local time
8:05 AM
PDT
Current temp
56°F
Mostly Clear
WNW 5 mph0% chanceLive forecast
Red Flag Warning
Red Flag Warning issued July 16 at 11:09PM PDT until July 17 at 8:00PM PDT by NWS Medford OR
Destination
Monrovia, CA
Morning
in Monrovia on Tuesday
Local time
8:05 AM
PDT
Current temp
65°F
Partly Cloudy
0 mph1% chanceLive forecast
Red Flag Warning
Red Flag Warning issued July 16 at 11:09PM PDT until July 17 at 8:00PM PDT by NWS Medford OR
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
9 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...
22 mi from route
~55 min detour
Free
near mile 328.2
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
~70 min detour
Free
near mile 265.1
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 drive is primarily highway cruising, with 88% of the 366.1 miles on freeways. You'll experience a long stretch of 181.1 miles on the Westside Freeway before transitioning to other roads. Expect frequent exits and merges as you navigate this route. The final portion will involve surface roads after the main highway segments conclude.
88% highway — fuel and pacing are the main things to plan.
21 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 1.6 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 15 significant decision points across 366.1 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 1.6 miles: Lane positioning matters here; 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.
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: 366.1 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 25 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 Monrovia, 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 25 rest areas along the route for bathroom stops.
The main spots that need attention: at 1.6 miles: Lane positioning matters here; 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.
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 13.8 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Monrovia, CA before the return drive.
