How far is Fontana, CA from Sonoma, CA?
The driving distance from Fontana, CA to Sonoma, CA is about 453.2 miles (729.3 km), with a travel time of about 08h 29m by car.
- The straight-line flight distance is about 403.1 miles (648.8 km).
- For a round trip, plan for roughly 16h 59m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 AM PDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 08h 29m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
City in Kings County, California, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Rain Showers
Areas Of Fog then Partly Sunny
Driving Route Map
The map below follows the saved road route between Fontana and Sonoma.
Turn-by-Turn Driving Directions
Step-by-step road directions between Fontana and Sonoma.
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1
Start on Merrill Avenue
63 m · 6 sec · Merrill Avenue
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2
Turn right onto Sierra Avenue
3 mi · 5 min · Sierra Avenue
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3
Take the ramp slight right toward CA 210 West
1784 ft · 45 sec
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4
Merge slight left onto Foothill Freeway
14.8 mi · 17 min · Foothill Freeway
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5
Keep slight right to continue on Foothill Freeway
1.2 mi · 1 min · Foothill Freeway
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6
Keep slight right to continue on Foothill Freeway
2.4 mi · 3 min · Foothill Freeway
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7
Keep slight right to continue on Foothill Freeway
1.4 mi · 2 min · Foothill Freeway
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8
Keep slight right to continue on Foothill Freeway
1.8 mi · 2 min · Foothill Freeway
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9
Keep slight right to continue on Foothill Freeway
20 mi · 23 min · Foothill Freeway
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10
Keep slight right to continue on Foothill Freeway
25.6 mi · 30 min · Foothill Freeway
-
11
Keep slight right
686 ft · 9 sec
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12
Merge slight right
1.6 km · 1 min
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13
Keep slight left
36.1 mi · 42 min
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14
Keep slight left to continue on Golden State Freeway
22.3 mi · 25 min · Golden State Freeway
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15
Keep slight right to continue on Westside Freeway
225.6 mi · 4 hr 2 min · Westside Freeway
-
16
Keep slight left to continue on William Elton Brown Freeway
15.9 mi · 17 min · William Elton Brown Freeway
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17
Keep slight right to continue on William Elton Brown Freeway
1.1 mi · 1 min · William Elton Brown Freeway
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18
Merge slight left onto Arthur H. Breed Junior Freeway
18 mi · 21 min · Arthur H. Breed Junior Freeway
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19
Keep slight right to continue on Arthur H. Breed Junior Freeway
1.6 mi · 2 min · Arthur H. Breed Junior Freeway
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20
Take the exit slight right toward I 680 South, I 680 North: San Jose, Sacramento, Concord, Walnut Creek
857 ft · 16 sec
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21
Keep slight right to continue on I 680 North: Walnut Creek, Concord, Sacramento
1614 ft · 30 sec
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22
Merge slight left onto Donald D Doyle Highway
15.2 mi · 18 min · Donald D Doyle Highway
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23
Continue on Senator Daniel E Boatwright Highway
5 mi · 6 min · Senator Daniel E Boatwright Highway
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24
Keep slight left to continue on Senator Daniel E Boatwright Highway
6 mi · 7 min · Senator Daniel E Boatwright Highway
-
25
Keep slight left to continue on Senator Daniel E Boatwright Highway
74 m · 3 sec · Senator Daniel E Boatwright Highway
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26
Keep slight right to continue on Senator Daniel E Boatwright Highway
1.8 mi · 2 min · Senator Daniel E Boatwright Highway
-
27
Keep slight left to continue on I 780: Benicia
6.7 mi · 8 min
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28
Take the exit slight right toward I 80 East: Sacramento
1379 ft · 34 sec
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29
Keep slight left to continue on I 80 East: Sacramento
137 m · 11 sec
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30
Merge slight left onto Dwight D. Eisenhower Highway
2.7 mi · 3 min · Dwight D. Eisenhower Highway
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31
Take the exit slight right toward CA 37: Napa, Novato, Auto Mall, Columbus Parkway
752 ft · 18 sec
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32
Keep slight left to continue on CA 37: Napa
2517 ft · 1 min
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33
Continue on CA 37
1.5 mi · 2 min
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34
Take the exit slight right toward CA 29: Napa, Sonoma Boulevard
1912 ft · 51 sec
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35
Turn right onto Sonoma Boulevard
1.6 mi · 2 min · Sonoma Boulevard
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36
Continue on Broadway Street
4 mi · 5 min · Broadway Street
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37
Continue on Napa–Vallejo Highway
1.3 mi · 2 min · Napa–Vallejo Highway
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38
Continue on Saint Helena Highway
2.6 mi · 3 min · Saint Helena Highway
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39
Turn left onto Carneros Highway
4.4 mi · 6 min · Carneros Highway
-
40
Continue on Fremont Drive
1.3 km · 1 min · Fremont Drive
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41
Turn right onto Napa Road
4.3 mi · 7 min · Napa Road
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42
Turn right onto Broadway
1.1 mi · 2 min · Broadway
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43
At the end of the road, turn left onto West Napa Street
14 m · 1 sec · West Napa Street
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44
Arrive at your destination
0 m · 1 sec · West Napa Street
Car Route Details
A richer read on the saved driving route between Fontana and Sonoma.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Westside Freeway
Keep slight right to continue on Westside Freeway
226 mi · 04h 02m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
Better with a longer stop
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
Chance Rain Showers leaving Fontana and Areas Of Fog then Partly Sunny near Sonoma.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Fontana to Sonoma?
The road trip is about 453.2 miles (729.3 km) and usually takes 08h 29m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
What is the halfway point on this route?
Avenal is a useful midpoint, sitting about 226.6 miles from Fontana and 226.6 miles from Sonoma.
How much longer is the road route than the straight-line distance?
The direct path is about 403.1 miles (648.8 km), while the road route adds roughly 50.1 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 6:00 AM to 7:30 AM PDT. Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $92.25 one way or $184.49 round trip. Estimated CO2 is about 142.1 kg one way.
What should you check before leaving?
Before you leave, expect Chance Rain Showers around Fontana and Areas Of Fog then Partly Sunny near Sonoma.
Stop Ideas Near Avenal
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Avenal.
Kettleman City, California
Lemoore, California
Lemoore (Naval Air Station), California
Corcoran station
Flight Path Map
This map shows the direct air route between Fontana and Sonoma. Straight-line distance: 403.16 mi (648.82 km).
#1 Fontana
The second most populous city in San Bernardino County, California.
| Population | 216,173 |
| Coordinates | 34.0922300, -117.4350500 |
| Altitude | 377 |
| Country | United States |
#2 Sonoma
Town in Sonoma County, California, United States
| Population | 10,973 |
| Coordinates | 38.2918600, -122.4580400 |
| Altitude | 26 |
| Country | United States |
End: Sonoma (-122.45804, 38.29186)
Estimated Travel Time
Distance: 729 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 15h 05m |
| 40 mph (64.37 km/h) | 11h 19m |
| 50 mph (80.47 km/h) | 09h 03m |
| 60 mph (96.56 km/h) | 07h 33m |
| 70 mph (112.65 km/h) | 06h 28m |
| 80 mph (129 km/h) | 05h 39m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.77 | $92.25 | $184.49 |
| Mid-grade | $6.07 | $97.00 | $193.99 |
| Premium | $6.24 | $99.83 | $199.65 |
| Diesel | $7.57 | $121.00 | $241.99 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in California · Apr 26, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.