How far is Rosamond, CA from Fontana, CA?
The driving distance from Rosamond, CA to Fontana, CA is about 84.8 miles (136.5 km), with a travel time of about 01h 52m by car.
- The straight-line flight distance is about 67.5 miles (108.7 km).
- For a round trip, plan for roughly 03h 44m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM PDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 01h 52m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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.
Census-designated place in Los Angeles County, California, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Rosamond and Fontana.
Turn-by-Turn Driving Directions
Step-by-step road directions between Rosamond and Fontana.
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1
Start on Sierra Highway
27 m · 8 sec · Sierra Highway
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2
Turn left onto Rosamond Boulevard
2653 ft · 53 sec · Rosamond Boulevard
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3
Take the ramp slight right toward CA 14 South: Los Angeles
1054 ft · 26 sec
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4
Merge slight left onto Aerospace Highway
6.2 mi · 7 min · Aerospace Highway
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5
Continue on Antelope Valley Freeway
13.7 mi · 15 min · Antelope Valley Freeway
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6
Take the exit slight right toward CA 138 East: Palmdale Boulevard
1056 ft · 30 sec
-
7
Keep slight left to continue on CA 138 East: Palmdale Boulevard
59 m · 10 sec
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8
Turn left onto West Palmdale Boulevard
1.1 mi · 1 min · West Palmdale Boulevard
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9
Take the exit slight right
125 m · 11 sec
-
10
Merge slight left onto Sierra Highway
1.4 mi · 2 min · Sierra Highway
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11
Turn left onto East Avenue S
3.9 mi · 6 min · East Avenue S
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12
Turn right onto 47th Street East
1595 ft · 27 sec · 47th Street East
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13
Continue on Fort Tejon Road
1.1 mi · 2 min · Fort Tejon Road
-
14
Continue on Pearblossom Highway
18 mi · 26 min · Pearblossom Highway
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15
Continue on Antelope Highway
20.5 mi · 28 min · Antelope Highway
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16
Take the exit slight right
1656 ft · 41 sec
-
17
Continue on Barstow and Mojave Freeway
6.3 mi · 7 min · Barstow and Mojave Freeway
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18
Take the exit slight left
4.3 mi · 5 min
-
19
Take the exit slight right toward Sierra Avenue
1307 ft · 39 sec
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20
Turn left onto Sierra Avenue
6.2 mi · 10 min · Sierra Avenue
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21
Turn left onto Merrill Avenue
63 m · 4 sec · Merrill Avenue
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22
Arrive at your destination
0 m · 1 sec · Merrill Avenue
Car Route Details
A richer read on the saved driving route between Rosamond and Fontana.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Antelope Highway
Continue on Antelope Highway
20.5 mi · 00h 28m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Sunny leaving Rosamond and Mostly Sunny near Fontana.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Rosamond to Fontana?
The road trip is about 84.8 miles (136.5 km) and usually takes 01h 52m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Lake Los Angeles is a useful midpoint, sitting about 42.4 miles from Rosamond and 42.4 miles from Fontana.
How much longer is the road route than the straight-line distance?
The direct path is about 67.5 miles (108.7 km), while the road route adds roughly 17.3 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 8:00 AM to 10:00 AM PDT. If you want a more comfortable same-day return, try to leave by 2:46 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $17.25 one way or $34.50 round trip. Estimated CO2 is about 26.6 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Rosamond and Mostly Sunny near Fontana.
Stop Ideas Near Lake Los Angeles
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 Lake Los Angeles.
Littlerock, California
Palmdale (Amtrak Thruway), California
Lancaster, California
Victor Valley Transportation Center
Flight Path Map
This map shows the direct air route between Rosamond and Fontana. Straight-line distance: 67.57 mi (108.74 km).
#1 Rosamond
Census-designated place in Kern County, California
| Population | 18,150 |
| Coordinates | 34.8641400, -118.1634100 |
| Altitude | 714 |
| 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: 136 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 49m |
| 40 mph (64.37 km/h) | 02h 07m |
| 50 mph (80.47 km/h) | 01h 41m |
| 60 mph (96.56 km/h) | 01h 24m |
| 70 mph (112.65 km/h) | 01h 12m |
| 80 mph (129 km/h) | 01h 03m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.77 | $17.25 | $34.50 |
| Mid-grade | $6.07 | $18.14 | $36.27 |
| Premium | $6.24 | $18.67 | $37.33 |
| Diesel | $7.57 | $22.63 | $45.25 |
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 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.