This 409.8-mile drive from Fontana, CA, to San Carlos, CA, is estimated to take about 7 hours and 44 minutes, making it a feasible day trip. You'll primarily be on Sierra Avenue and the CA 210 West, also known as the Foothill Freeway. With a fuel cost estimated at $95, this trip offers a direct path through the Pacific Coast region of California. The route is characterized by frequent turns rather than long highway stretches, so be prepared for a more involved driving experience. It's designed for a single day of travel, allowing you to reach your destination without needing an overnight stop.
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
204.9 miles from Fontana, CA
A natural place for your longest stop of the day
, about 3h 51m into the drive
.
Main Roads
Road
Distance
Duration
Westside Freeway
182.5 mi
3h 15m
Foothill Freeway
67.2 mi
1h 17m
CA 152
41.1 mi
51m
I 5 Truck
37.1 mi
42m
US 101
34.7 mi
39m
Golden State Freeway
22.3 mi
25m
South Valley Freeway
19.9 mi
22m
Sierra Avenue
3 mi
4m
Longest stretch:
Westside Freeway
— 182.5 mi, about 3h 15m
Traffic on I-5
Hour-of-day weekday pattern from 69 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 Fontana, CA and San Carlos, CA.
1
Start on Merrill Avenue
205 ft·6 sec·Merrill Avenue
2
Turn right onto Sierra Avenue
3.0 mi·4 min·Sierra Avenue
Use the left / straight lanes.
3
Take the ramp
0.3 mi·45 sec
Toward CA 210 WestUse the straight / slight right lanes.
4
Merge onto CA 210
15 mi·17 min·Foothill Freeway
Use the straight / slight right lanes.
5
Keep slight right at fork onto CA 210
1.2 mi·1 min·Foothill Freeway
Use the straight / slight right lanes.
6
Keep slight right at fork onto CA 210
2.4 mi·2 min·Foothill Freeway
Use the straight / slight right lanes.
7
Keep slight right at fork onto CA 210
1.4 mi·1 min·Foothill Freeway
Use the straight / slight right lanes.
8
Keep slight right at fork onto CA 210
1.8 mi·2 min·Foothill Freeway
Use the straight / slight right lanes.
9
Keep slight right at fork onto CA 210
20 mi·23 min·Foothill Freeway
Use the straight / slight right lanes.
10
Keep slight right at fork onto I 210
26 mi·29 min·Foothill Freeway
Exit 26AToward I 210 West: SacramentoUse the straight / slight right lanes.
11
Keep slight right at fork
0.1 mi·9 sec
Use the slight right lane.
12
Merge onto I 5 Truck
1.0 mi·1 min·I 5 Truck
Exit 161A
13
Keep slight left at fork onto I 5 Truck
36 mi·41 min·I 5 Truck
Use the straight / slight right lanes.
14
Keep slight left at fork onto I 5
22 mi·25 min·Golden State Freeway
Use the straight / slight right lanes.
15
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.
16
Take the exit
0.2 mi·26 sec
Exit 403BToward CA 152 West: Gilroy, Hollister, San Jose
17
Continue on CA 152; CA33
29 mi·33 min·CA 152; CA33
Use the straight lane.
18
Keep slight right at fork onto CA 152
12 mi·16 min·CA 152
19
Take the exit onto CA 152
0.5 mi·1 min·CA 152
Toward US 101 North: San Jose
20
Merge onto US 101; CA 152
20 mi·22 min·South Valley Freeway
Use the slight right lane.
21
Keep slight left at fork onto US 101
22 mi·25 min·US 101
Use the straight / slight right lanes.
22
Keep slight left at fork onto US 101
13 mi·14 min·US 101
Use the slight left lane.
23
Take the exit
0.1 mi·19 sec
Exit 411Toward Holly StreetUse the slight right lane.
24
Keep slight left at fork
0.2 mi·26 sec
Exit 411Toward Holly StreetUse the straight / slight right lanes.
25
Keep slight right at fork
0.1 mi·18 sec
Toward Holly StreetUse the straight / right lanes.
26
Turn straight onto Holly Street
0.5 mi·1 min·Holly Street
Use the straight lane.
27
Turn left onto CA 82
0.1 mi·26 sec·El Camino Real
Use the straight lane.
28
Turn right onto San Carlos Avenue
62 ft·1 sec·San Carlos Avenue
Use the right lane.
29
Arrive at destination
San Carlos Avenue
Trip Plan
To make the most of this 7-hour and 44-minute journey, consider an early morning departure from Fontana to avoid potential traffic, especially on local roads. With two recommended stops, you can break up the 409.8 miles effectively. The route's 'turn-heavy' nature means you'll want to stay alert and perhaps use navigation that emphasizes turn-by-turn directions. Budget around $95 for fuel, and keep an eye on your tank, especially as you navigate through less populated areas between the main stretches. Plan your stops strategically for both rest and fuel to ensure a smooth trip to San Carlos.
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 204.9 miles from Fontana, CA, or about 3h 51m 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 90 miles or 1h 45m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 204.9 miles or 3h 51m 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 32m
Traffic, exits, and arrival timing usually matter more near San Carlos, CA than in the middle of the route.
Before You Leave
+
Open the route before leaving Fontana, 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 Fontana, CA
This is one driving day of about 409.8 miles and 7h 44m.
Your first comfortable stop window is around 90 miles from Fontana, 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 182.5 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 26
5 decision points cluster between mile 45 and 409 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
8
45 mi into trip|~53m in|I 210 / Foothill Freeway
Keep slight right at fork onto I 210 / Foothill Freeway toward I 210 West: Sacramento
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Exit 26A
Toward I 210 West: Sacramento
7
130.1 mi into trip|~2h 31m 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
7
408.6 mi into trip|~7h 41m in
Take the exit toward Holly Street
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Exit 411
Toward Holly Street
9
408.8 mi into trip|~7h 41m in
Keep slight left at fork toward Holly Street
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Exit 411
Toward Holly Street
8
409 mi into trip|~7h 42m in
Keep slight right at fork toward Holly Street
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / right lanes.
Toward Holly Street
Fuel & Cost
Regular Gas
$92.88 one way
$185.77 round trip
$5.76/gal25.4 MPG avg143 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$5.96
$96.09
$192.19
premium
$6.09
$98.29
$196.57
diesel
$5.40
$87.17
$174.34
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$93
Meals
$25–$50
Total
$118–$143
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 143.4 kg one way.
Prices: EIA weekly data, 2026-04-20.
Driving Electric?
About $43 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
122.9
1
$43.03
$19.67
Efficient EV
102.5
1
$35.86
$16.39
EV Truck/SUV
163.9
2
$57.37
$26.23
Gas CO2
143 kg
EV CO2
48 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 24, 2026
Origin
Fontana, CA
Afternoon
in Fontana on Saturday
Local time
4:46 PM
PDT
Current temp
55°F
Unavailable
Live forecast
Destination
San Carlos, CA
Afternoon
in San Carlos on Saturday
Local time
4:46 PM
PDT
Current temp
51°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
4 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
7h 44m 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 70.6
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...
23 mi from route
~57 min detour
Free
near mile 409.8
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 127.2
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...
28 mi from route
~71 min detour
Free
near mile 409.8
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
Expect a driving experience that is heavy on turns and local road navigation, with a 0% highway share. This means you won't be settling into long stretches of interstate driving; instead, you'll be actively engaged with the road. While there isn't a specified longest uninterrupted stretch, the 'turn-heavy local drive' profile suggests a dynamic journey. The character of the road will likely involve more frequent adjustments and a closer connection to the surrounding communities as you make your way north.
99% highway — fuel and pacing are the main things to plan.
29 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 182.5 mi on Westside Freeway.
How Hard Is This Drive?
9/10
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 45 miles in near I 210 / Foothill Freeway.
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 26 significant decision points across 409.8 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 45 miles (I 210 / Foothill Freeway): Highway fork - watch signs carefully. Lane positioning matters here; at 130.1 miles (I 5 / Westside Freeway): Highway fork - watch signs carefully. Lane positioning matters here; at 408.6 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Fontana, CA and San Carlos, CA, road signs point toward Hollister and San Jose.
Doable as a same-day drive at 7h 44m. Total distance: 409.8 miles.
Family Friendly
Moderate complexity with 2 natural rest stops along the way.
Solo Traveler
7h 44m drive, plan rest stops for pacing.
Frequently Asked Questions
The longest stretch is about 182.5 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 San Carlos, 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 45 miles (I 210 / Foothill Freeway): Highway fork - watch signs carefully. Lane positioning matters here; at 130.1 miles (I 5 / Westside Freeway): Highway fork - watch signs carefully. Lane positioning matters here; at 408.6 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
Yes — Santa Monica Mountains National Recreation Area, San Francisco Maritime National Historical Park and César E. Chávez National Monument (4 total within detour distance). See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 7.7 hours each way, a round trip means 15.5 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at San Carlos, CA before the return drive.
