Fontana, CA to Hamilton City, CA is 528.7 miles and takes about 9h 56m via Westside Freeway and CA 70, with a fuel budget near $123 and best split over two days. This long-haul drive traverses California's diverse landscapes, moving from the Pacific Coast region towards the northern part of the state. Given the nearly 10-hour estimated drive time, planning for an overnight stop is highly recommended to avoid fatigue. Consider this route if you're looking for a straightforward path with minimal complexity, focusing on reaching your destination efficiently.
Trip Pace
Best split across 2 days
Treat the return leg as its own travel day rather than an afterthought.
Break Rhythm
2 planned breaks
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
264.3 miles from Fontana, CA
A natural place for your longest stop of the day
, about 4h 55m into the drive
.
Main Roads
Road
Distance
Duration
Westside Freeway
304.9 mi
5h 29m
Foothill Freeway
67.2 mi
1h 17m
CA 70
52 mi
1h
I 5 Truck
37.1 mi
42m
Golden State Freeway
22.3 mi
25m
CA 99
12 mi
13m
Golden State Highway
7.5 mi
8m
CA 32
7.2 mi
10m
Longest stretch:
Westside Freeway
— 304.9 mi, about 5h 29m
Traffic on I-5
Hour-of-day weekday pattern from 206 FHWA count stations on your route.
Peak
3 PM
~3,871 veh/hr typical
· worst 5,154
Quietest
2 AM
~553 veh/hr
Peak-to-quiet ratio
7×
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 Hamilton City, 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
226 mi·4 hr 1 min·Westside Freeway
Toward I 5 NorthUse the straight / slight right lanes.
16
Keep slight right at fork onto I 5
26 mi·27 min·Westside Freeway
17
Keep left at fork onto I 5
54 mi·59 min·Westside Freeway
Use the straight / slight right lanes.
18
Keep slight right at fork onto CA 99
7.5 mi·8 min·Golden State Highway
Toward CA 99 North, CA 70: Yuba City, MarysvilleUse the straight / slight right lanes.
19
Continue on CA 99
5.0 mi·5 min·Bernie Richter Memorial Highway
20
Keep slight right at fork onto CA 70
22 mi·25 min·CA 70
Toward CA 70 North: Marysville, OrovilleUse the straight / slight right lanes.
21
Turn right onto 5th Street
0.2 mi·38 sec·5th Street
22
Turn left onto B Street
1.5 mi·3 min·B Street
Use the straight / right lanes.
23
Continue on CA 70
30 mi·35 min·CA 70
Use the left lane.
24
Keep slight left at fork onto CA 149
5.7 mi·6 min·CA 149
Use the straight lane.
25
Merge onto CA 99
12 mi·13 min·CA 99
Use the straight lane.
26
Take the exit
0.2 mi·22 sec
Toward East Avenue
27
Turn left onto East Avenue
2.0 mi·3 min·East Avenue
28
Turn right onto CA 32
7.2 mi·10 min·CA 32
29
Turn left onto Main Street
0.2 mi·53 sec·Main Street
30
Turn right onto West 4th Street
304 ft·13 sec·West 4th Street
31
Arrive at destination
West 4th Street
Trip Plan
With a total duration nearing 10 hours, this trip is best tackled over two days to ensure safety and comfort. Aim to depart early in the morning on your first day, perhaps around 7 AM, to maximize daylight driving. Plan for one overnight stop to break up the 528.7 miles; this will allow you to enjoy the drive without feeling rushed. Keep an eye on your fuel gauge, especially during the longer stretches on the Westside Freeway, where services can be spaced further apart. The estimated fuel cost of $123 is a good baseline for budgeting.
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.
This drive is better paced as a 2-day trip.
Plan roughly 2 meaningful breaks for fuel, food, and rest.
The halfway point lands around 264.3 miles from Fontana, CA, or about 4h 55m into the drive.
The longest continuous stretch on this route runs about 304.9 miles.
Consider an overnight stop or starting very early.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 116 miles or 2h 15m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 264.3 miles or 4h 55m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Overnight split
Day 1 wrap after about 264.3 miles or 4h 55m
Stop before fatigue turns the last few hours into a grind. You want day two to start fresh, not just resumed.
Final approach
Final hour starts around 8h 40m
Traffic, exits, and arrival timing usually matter more near Hamilton City, 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.
+
Treat this as a 2-day road trip and book the overnight stop before the busiest arrival window.
Day 1
Settle into the route from Fontana, CA
Aim for roughly 264 miles and 5 hours of wheel time on this day.
Day 2
Finish the approach into Hamilton City, CA
Aim for roughly 264 miles and 5 hours of wheel time on this day.
Your first comfortable stop window is around 116 miles from Fontana, CA.
This route usually feels better as a 2-day drive than as one long push.
Plan about 2 real breaks rather than only quick fuel stops.
The longest stretch is on Westside Freeway for about 304.9 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 27
5 decision points cluster between mile 0 and 447.5 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
0 mi into trip|~0m in|Sierra Avenue
Turn right onto Sierra Avenue
Lane positioning matters here
Use the left / straight lanes.
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
8
435.1 mi into trip|~8h in|CA 99 / Golden State Highway
Keep slight right at fork onto CA 99 / Golden State Highway toward CA 99 North, CA 70: Yuba City, Marysville
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward CA 99 North, CA 70: Yuba City, Marysvill...
8
447.5 mi into trip|~8h 15m in|CA 70
Keep slight right at fork onto CA 70 toward CA 70 North: Marysville, Oroville
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward CA 70 North: Marysville, Oroville
Fuel & Cost
Regular Gas
$110.61 one way
$221.22 round trip
$5.31/gal25.4 MPG avg185 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$5.52
$114.88
$229.76
premium
$5.67
$117.92
$235.83
diesel
$4.80
$99.83
$199.66
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$111
Hotel (1n)
$80–$140
Meals
$50–$100
Total
$241–$351
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 185 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $56 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
158.6
1
$55.51
$25.38
Efficient EV
132.2
1
$46.26
$21.15
EV Truck/SUV
211.5
2
$74.02
$33.84
Gas CO2
185 kg
EV CO2
62 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 16, 2026
Origin
Fontana, CA
Late night
in Fontana on Sunday
Local time
1:16 AM
PDT
Current temp
99°F
Sunny
SW 15 mph3% chanceLive forecast
Extreme Heat Warning
Extreme Heat Warning issued July 16 at 1:29PM PDT until July 16 at 8:00PM PDT by NWS San Diego CA
Extreme Heat Warning
Extreme Heat Warning issued July 16 at 1:29PM PDT until July 16 at 8:00PM PDT by NWS San Diego CA
Destination
Hamilton City, CA
Late night
in Hamilton City on Sunday
Local time
1:16 AM
PDT
Current temp
95°F
Sunny
SSE 9 mph0% chanceLive forecast
Extreme Heat Warning
Extreme Heat Warning issued July 16 at 1:29PM PDT until July 16 at 8:00PM PDT by NWS San Diego CA
Extreme Heat Warning
Extreme Heat Warning issued July 16 at 1:29PM PDT until July 16 at 8:00PM PDT by NWS San Diego 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.
For long drives, weather on day two can matter just as much as conditions at departure, so check the whole travel window rather than only the first day.
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
9h 56m on the road
This is long enough that the arrival forecast matters almost as much as departure conditions. Recheck both ends before you roll.
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 72.9
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
~69 min detour
Free
near mile 127.6
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
You'll spend 96% of this drive on highways, covering a significant 507.6 miles on the Westside Freeway alone before transitioning. The longest continuous stretch without a major road change is 304.9 miles, indicating extended periods of consistent driving. Expect to encounter a high density of exits and merges as you navigate through various urban and suburban areas before the landscape shifts to more rural cruising on CA 70. The route primarily utilizes major freeways for the bulk of the mileage.
96% highway — fuel and pacing are the main things to plan.
31 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 304.9 mi on Westside Freeway.
How Hard Is This Drive?
8/10
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 early in the drive near Sierra Avenue.
Driving Effort8/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 27 significant decision points across 528.7 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: near the start (Sierra Avenue): Lane positioning matters here; 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.
Elevation Profile
Hilly terrain with moderate elevation changes
4,057 ft18 ft
Total Climb
4,064 ft
Total Descent
5,147 ft
Highest Point
4,057 ft
~113.3 mi in
Elevation Range
4,039 ft
Notable High Points
4,057 ft at ~113.3 miles+2,710 ft prominence
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 Hamilton City, CA, road signs point toward Marysville and Oroville.
The longest stretch is about 304.9 miles on Westside Freeway. The full list of main roads is in the Roads section above.
Yes — a 2-day pace is more comfortable than one long haul. A sensible stopping point is after roughly 264 miles on day one.
Yes — we found about 39 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 Hamilton City, 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. There are 39 rest areas along the route for bathroom stops.
The main spots that need attention: near the start (Sierra Avenue): Lane positioning matters here; 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.
Yes — Santa Monica Mountains National Recreation Area and César E. Chávez National Monument. See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 9.9 hours each way, a round trip means 19.9 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Hamilton City, CA before the return drive.
