The drive from San Mateo, CA to Fontana, CA covers 414.5 miles and takes about 7h 50m 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, Bayshore Freeway for much of the mileage,
and the overall profile is highway-focused drive.
The longest uninterrupted segment is about 181.1 miles on Westside Freeway.
At current regular gas prices, budget about $95.27 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
2 planned breaks
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
207.2 miles from San Mateo, CA
A natural place for your longest stop of the day
, about 3h 56m into the drive
.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 7h 50m. Total distance: 414.5 miles.
Family Friendly
Moderate complexity with 2 natural rest stops along the way.
Solo Traveler
7h 50m drive, plan rest stops for pacing.
Drive Character
This is a 7h 50m highway drive covering 414.5 miles, with most of the trip on Westside Freeway and Foothill Freeway. The longest continuous stretch is about 181.1 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 27 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 181.1 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 0.5 miles in near East 4th Avenue.
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 23 significant decision points across 414.5 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 0.5 miles (East 4th Avenue): Lane positioning matters here; at 0.7 miles (East 4th Avenue): Highway fork - watch signs carefully. Lane positioning matters here; at 18.4 miles (US 101 / Bayshore Freeway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Critical Maneuvers
5 of 23 key points
These are the spots where you need to pay the most attention. Preview them before you drive.
7
0.5 mi into trip|~1m in|East 4th Avenue
Turn left onto East 4th Avenue
Lane positioning matters here
Use the left lane.
7
0.7 mi into trip|~1m in|East 4th Avenue
Keep slight left at fork onto East 4th Avenue
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / right lanes.
8
18.4 mi into trip|~22m in|US 101 / Bayshore Freeway
Keep slight left at fork onto US 101 / Bayshore Freeway toward US 101 South: San Jose, Los Angeles
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward US 101 South: San Jose, Los Angeles
7
343.9 mi into trip|~6h 27m 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
368.6 mi into trip|~6h 55m 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,...
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 San Mateo, CA to Fontana, CA, road signs begin pointing toward Ventura along the way.
Ventura
368.6 mi in|~6h 55m|via I 210
Main Roads
Road
Distance
Duration
Westside Freeway
181.1 mi
3h 14m
Foothill Freeway
67 mi
1h 17m
Bayshore Freeway
59.8 mi
1h 8m
I 5 Truck
58.4 mi
1h 6m
Pacheco Pass Highway
40.6 mi
50m
Sierra Avenue
3 mi
4m
Golden State Freeway
2 mi
2m
East 3rd Avenue
0.4 mi
<1m
Longest stretch:
Westside Freeway
— 181.1 mi, about 3h 14m
Turn-by-Turn Driving Directions
Step-by-step road directions between San Mateo, CA and Fontana, CA.
1
Start on CA 82
96 ft·6 sec·South El Camino Real
2
Turn right onto East 3rd Avenue
0.4 mi·50 sec·East 3rd Avenue
3
Turn right onto South Delaware Street
373 ft·14 sec·South Delaware Street
4
Turn left onto East 4th Avenue
0.2 mi·29 sec·East 4th Avenue
Use the left lane.
5
Keep slight left at fork onto East 4th Avenue
0.1 mi·19 sec·East 4th Avenue
Use the straight / right lanes.
6
Take the ramp
0.3 mi·38 sec
Toward US 101 South: San Jose
7
Merge onto US 101
17 mi·19 min·Bayshore Freeway
Use the straight / slight right lanes.
8
Keep slight left at fork onto US 101
42 mi·48 min·Bayshore Freeway
Toward US 101 South: San Jose, Los AngelesUse the straight / slight right lanes.
9
Take the exit onto CA 152
0.3 mi·39 sec·CA 152
Toward CA 152 East: 10th Street, Pacheco Pass Road
10
Turn left onto CA 152
353 ft·12 sec·East 10th Street
11
Continue on CA 152
41 mi·50 min·Pacheco Pass Highway
12
Take the exit
0.6 mi·1 min
Toward I 5: Los Angeles
13
Merge onto I 5
181 mi·3 hr 14 min·Westside Freeway
Use the straight / slight right lanes.
14
Keep slight right at fork onto I 5 Truck
58 mi·1 hr 6 min·I 5 Truck
Use the straight / slight right lanes.
15
Keep slight left at fork onto I 5
2.0 mi·2 min·Golden State Freeway
Use the straight / slight right lanes.
16
Take the exit
0.3 mi·17 sec
Exit 161AToward I 210 East: PasadenaUse the slight right lane.
17
Continue on I 210
24 mi·28 min·Foothill Freeway
Use the straight / slight right lanes.
18
Keep slight right at fork onto I 210
19 mi·22 min·Foothill Freeway
Toward CA 134 West, I 210 East: San Bernardino, VenturaUse the slight right lane.
19
Keep slight right at fork onto I 210
2.9 mi·3 min·Foothill Freeway
Use the straight / slight right lanes.
20
Keep slight right at fork onto CA 210
1.4 mi·1 min·Foothill Freeway
Use the straight / slight right lanes.
21
Keep slight right at fork onto CA 210
1.2 mi·1 min·Foothill Freeway
Use the straight / slight right lanes.
22
Keep slight right at fork onto CA 210
1.8 mi·2 min·Foothill Freeway
Use the straight / slight right lanes.
23
Keep slight right at fork onto CA 210
16 mi·18 min·Foothill Freeway
Use the straight / slight right lanes.
24
Take the exit
0.3 mi·46 sec
Exit 67Toward Sierra AvenueUse the straight / slight right lanes.
25
Turn right onto Sierra Avenue
3.0 mi·4 min·Sierra Avenue
Use the left / right lanes.
26
Turn left onto Merrill Avenue
205 ft·4 sec·Merrill Avenue
Use the left lane.
27
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 2 meaningful breaks for fuel, food, and rest.
The halfway point lands around 207.2 miles from San Mateo, CA, or about 3h 56m 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 91 miles or 1h 49m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 207.2 miles or 3h 56m 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 39m
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 San Mateo, 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 San Mateo, CA
This is one driving day of about 414.5 miles and 7h 50m.
Your first comfortable stop window is around 91 miles from San Mateo, 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.
Halfway Point
Midpoint
About 207.2 mi from San Mateo, CA
· 3h 56m into the drive
The midpoint is around 207.2 miles from San Mateo, CA, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel check
Top up before Westside Freeway if your tank is already low. That segment runs about 181.1 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.
National Parks Near This Route
Worth a detour if your schedule allows.
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...
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 343
Rosie the Riveter WWII Home Front National Historical Park
National Historical Park
Celebrate and honor the contributions and sacrifices of American civilians on the WWII home front. Discover how diverse communities lived, worked, and interacted. Many faces, many stories, many truths...
Experience a park so rich it supports 19 distinct ecosystems with over 2,000 plant and animal species. Go for a hike, enjoy a vista, have a picnic or learn about the centuries of overlapping history f...
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
~68 min detour
Free
near mile 285.9
Walk among old growth coast redwoods, cooling their roots in the fresh water of Redwood Creek and lifting their crowns to reach the sun and fog. Federally protected as a National Monument since 1908,...
Park data from the National Park Service API. Alerts update every 2 hours.
Fuel & Cost
Regular Gas
$95.27 one way
$190.54 round trip
$5.84/gal25.4 MPG avg145 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$6.02
$98.17
$196.35
premium
$6.18
$100.80
$201.60
diesel
$5.61
$91.52
$183.03
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$95
Meals
$25–$50
Total
$120–$145
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 145 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $44 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
124.4
1
$43.52
$19.90
Efficient EV
103.6
1
$36.27
$16.58
EV Truck/SUV
165.8
2
$58.03
$26.53
Gas CO2
145 kg
EV CO2
48 kg (67% 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 15, 2026
Origin
San Mateo, CA
Afternoon
in San Mateo on Thursday
Local time
3:28 PM
PDT
Current temp
--
Unavailable
Destination
Fontana, CA
Afternoon
in Fontana on Thursday
Local time
3:28 PM
PDT
Current temp
76°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.
Road read
7h 50m 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 San Mateo, CA to Fontana, CA covers 414.5 miles and takes about 7h 50m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Westside Freeway, Foothill Freeway, Bayshore Freeway. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 207.2 miles from San Mateo, CA. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $95.27 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 2 meaningful breaks 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 23 significant decision points across 414.5 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 0.5 miles (East 4th Avenue): Lane positioning matters here; at 0.7 miles (East 4th Avenue): Highway fork - watch signs carefully. Lane positioning matters here; at 18.4 miles (US 101 / Bayshore Freeway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
On the drive from San Mateo, CA to Fontana, CA, road signs begin pointing toward Ventura along the way.
Yes. Nearby national parks include San Francisco Maritime National Historical Park, Santa Monica Mountains National Recreation Area and Rosie the Riveter WWII Home Front National Historical Park. There are 6 parks within detour distance of this route.
