How far is Seaside, CA from Fontana, CA?
The driving distance from Seaside, CA to Fontana, CA is about 364.9 miles (587.3 km), with a travel time of about 07h 05m by car.
- The straight-line flight distance is about 303.7 miles (488.7 km).
- For a round trip, plan for roughly 14h 10m 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 07h 05m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Census-designated place in Kern County, California
Route Weather Snapshot
Check the forecast at both ends before you head out.
Patchy Fog then Partly Sunny
Driving Route Map
The map below follows the saved road route between Seaside and Fontana.
Turn-by-Turn Driving Directions
Step-by-step road directions between Seaside and Fontana.
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1
Start on Shasta Street
42 m · 13 sec · Shasta Street
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2
Turn left onto Contra Costa Street
153 m · 29 sec · Contra Costa Street
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3
Turn right onto Del Monte Boulevard
1385 ft · 31 sec · Del Monte Boulevard
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4
Turn left onto Canyon del Rey Boulevard
2.6 mi · 4 min · Canyon del Rey Boulevard
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5
Turn left onto Monterey Salinas Highway
12.4 mi · 16 min · Monterey Salinas Highway
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6
Continue on South Main Street
3098 ft · 44 sec · South Main Street
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7
Turn right onto East Blanco Road
1.6 mi · 2 min · East Blanco Road
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8
Continue on South Sanborn Road
1.2 km · 59 sec · South Sanborn Road
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9
Take the exit right
1061 ft · 26 sec
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10
Merge slight left onto El Camino Real
94.6 mi · 1 hr 49 min · El Camino Real
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11
Take the exit slight right toward CA 46 East: Fresno, Bakersfield
968 ft · 30 sec
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12
Turn left
24.5 mi · 29 min
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13
Merge slight left
1.4 mi · 2 min
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14
Turn slight right
149 m · 6 sec
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15
Keep slight left to continue on Antelope Road
5.3 mi · 7 min · Antelope Road
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16
Continue on Paso Robles Highway
32.3 mi · 39 min · Paso Robles Highway
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17
Take the exit slight right
2047 ft · 25 sec
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18
Merge slight left onto Westside Freeway
56.8 mi · 1 hr 1 min · Westside Freeway
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19
Keep slight right
58.4 mi · 1 hr 7 min
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20
Keep slight left to continue on Golden State Freeway
2 mi · 2 min · Golden State Freeway
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21
Take the exit slight right toward I 210 East: Pasadena
1347 ft · 18 sec
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22
Continue on Foothill Freeway
24.4 mi · 28 min · Foothill Freeway
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23
Keep slight right to continue on Foothill Freeway
19.1 mi · 22 min · Foothill Freeway
-
24
Keep slight right to continue on Foothill Freeway
2.9 mi · 3 min · Foothill Freeway
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25
Keep slight right to continue on Foothill Freeway
1.4 mi · 2 min · Foothill Freeway
-
26
Keep slight right to continue on Foothill Freeway
1.2 mi · 1 min · Foothill Freeway
-
27
Keep slight right to continue on Foothill Freeway
1.8 mi · 2 min · Foothill Freeway
-
28
Keep slight right to continue on Foothill Freeway
16.1 mi · 19 min · Foothill Freeway
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29
Take the exit slight right toward Sierra Avenue
1796 ft · 46 sec
-
30
Turn right onto Sierra Avenue
3 mi · 5 min · Sierra Avenue
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31
Turn left onto Merrill Avenue
63 m · 4 sec · Merrill Avenue
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32
Arrive at your destination
0 m · 1 sec · Merrill Avenue
Car Route Details
A richer read on the saved driving route between Seaside and Fontana.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
El Camino Real
Merge slight left onto El Camino Real
94.6 mi · 01h 49m
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.
Sunny leaving Seaside and Patchy Fog then Partly Sunny near Fontana.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Seaside to Fontana?
The road trip is about 364.9 miles (587.3 km) and usually takes 07h 05m 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?
Lost Hills is a useful midpoint, sitting about 182.4 miles from Seaside and 182.5 miles from Fontana.
How much longer is the road route than the straight-line distance?
The direct path is about 303.7 miles (488.7 km), while the road route adds roughly 61.2 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 $74.30 one way or $148.61 round trip. Estimated CO2 is about 114.5 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Seaside and Patchy Fog then Partly Sunny near Fontana.
Stop Ideas Near Lost Hills
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 Lost Hills.
Wasco station
Kettleman City, California
Corcoran station
Bakersfield
Flight Path Map
This map shows the direct air route between Seaside and Fontana. Straight-line distance: 303.65 mi (488.67 km).
#1 Seaside
City in California, USA
| Population | 34,115 |
| Coordinates | 36.6110700, -121.8516200 |
| Altitude | 7 |
| Country | United States |
#2 Fontana
The second most populous city in San Bernardino County, California.
| Population | 216,173 |
| Coordinates | 34.0922300, -117.4350500 |
| Altitude | 377 |
| Country | United States |
End: Fontana (-117.43505, 34.09223)
Estimated Travel Time
Distance: 587 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 12h 09m |
| 40 mph (64.37 km/h) | 09h 07m |
| 50 mph (80.47 km/h) | 07h 17m |
| 60 mph (96.56 km/h) | 06h 04m |
| 70 mph (112.65 km/h) | 05h 12m |
| 80 mph (129 km/h) | 04h 33m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.77 | $74.30 | $148.61 |
| Mid-grade | $6.07 | $78.13 | $156.26 |
| Premium | $6.24 | $80.41 | $160.82 |
| Diesel | $7.57 | $97.46 | $194.93 |
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 16, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.