How far is Fontana, CA from Rossmoor, CA?
The driving distance from Fontana, CA to Rossmoor, CA is about 58 miles (93.4 km), with a travel time of about 01h 11m by car.
- The straight-line flight distance is about 42.9 miles (69 km).
- For a round trip, plan for roughly 02h 22m 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 11m.
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.
Village in California, USA
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 Fontana and Rossmoor.
Turn-by-Turn Driving Directions
Step-by-step road directions between Fontana and Rossmoor.
-
1
Start on Merrill Avenue
63 m · 9 sec · Merrill Avenue
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2
Turn left onto Sierra Avenue
1.6 mi · 3 min · Sierra Avenue
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3
Take the ramp slight right toward I 10 West: Los Angeles
1761 ft · 45 sec
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4
Merge slight left onto San Bernardino Freeway
5.8 mi · 7 min · San Bernardino Freeway
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5
Keep slight left to continue on I-10 Metro ExpressLanes
9.3 mi · 10 min · I-10 Metro ExpressLanes
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6
Merge slight right onto San Bernardino Freeway
1.2 mi · 1 min · San Bernardino Freeway
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7
Keep slight right to continue on San Bernardino Freeway
1.4 km · 1 min · San Bernardino Freeway
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8
Keep slight right to continue on San Bernardino Freeway
1.3 mi · 2 min · San Bernardino Freeway
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9
Keep slight right to continue on San Bernardino Freeway
1.9 mi · 2 min · San Bernardino Freeway
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10
Keep slight right to continue on San Bernardino Freeway
1.3 km · 55 sec · San Bernardino Freeway
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11
Take the exit slight right toward CA 57: Santa Ana
1086 ft · 27 sec
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12
Keep slight left to continue on CA 57 South: Santa Ana
1.5 km · 2 min
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13
Merge slight left onto Orange Freeway
2.9 mi · 3 min · Orange Freeway
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14
Merge slight left onto Pomona Freeway
1.3 mi · 1 min · Pomona Freeway
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15
Keep slight right to continue on Orange Freeway
123 m · 5 sec · Orange Freeway
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16
Keep slight left to continue on Orange Freeway
1.3 km · 57 sec · Orange Freeway
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17
Keep slight right to continue on Orange Freeway
1.5 mi · 2 min · Orange Freeway
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18
Keep slight right to continue on Orange Freeway
13.9 mi · 16 min · Orange Freeway
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19
Take the exit slight right toward CA 22 West: Long Beach
1482 ft · 20 sec
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20
Keep slight left to continue on CA 22 West
1.5 km · 1 min
-
21
Merge slight left onto Garden Grove Freeway
9.2 mi · 11 min · Garden Grove Freeway
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22
Continue on San Diego Freeway
1.2 mi · 1 min · San Diego Freeway
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23
Take the exit slight right toward Seal Beach Boulevard, Los Alamitos Boulevard
1374 ft · 38 sec
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24
Turn right onto Seal Beach Boulevard
1741 ft · 46 sec · Seal Beach Boulevard
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25
Turn left onto Saint Cloud Drive
1237 ft · 30 sec · Saint Cloud Drive
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26
Continue on Montecito Road
1504 ft · 46 sec · Montecito Road
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27
Turn left onto Mainway Drive
2547 ft · 2 min · Mainway Drive
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28
Turn right onto Foster Road
94 m · 16 sec · Foster Road
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29
Turn left onto Kempton Drive
38 m · 6 sec · Kempton Drive
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30
Arrive at your destination
0 m · 1 sec · Kempton Drive
Car Route Details
A richer read on the saved driving route between Fontana and Rossmoor.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Orange Freeway
Keep slight right to continue on Orange Freeway
13.9 mi · 00h 16m
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 Fontana and Mostly Sunny near Rossmoor.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Fontana to Rossmoor?
The road trip is about 58 miles (93.4 km) and usually takes 01h 11m 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?
Walnut is a useful midpoint, sitting about 29 miles from Fontana and 29 miles from Rossmoor.
How much longer is the road route than the straight-line distance?
The direct path is about 42.9 miles (69 km), while the road route adds roughly 15.1 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 8:00 AM to 10:00 AM PDT. If you want a more comfortable same-day return, try to leave by 4:08 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $11.83 one way or $23.65 round trip. Estimated CO2 is about 18.2 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Fontana and Mostly Sunny near Rossmoor.
Stop Ideas Near Walnut
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Your Home Away From Home
Disney's Grand Californian Hotel & Spa
City of South El Monte City Hall
Anaheim City Clerk
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Walnut.
Pomona station
Claremont, California
Fullerton Transportation Center
Ontario
Flight Path Map
This map shows the direct air route between Fontana and Rossmoor. Straight-line distance: 42.86 mi (68.98 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 Rossmoor
Census-designated place in Orange County, California, United States
| Population | 10,244 |
| Coordinates | 33.7855700, -118.0850600 |
| Altitude | 4 |
| Country | United States |
End: Rossmoor (-118.08506, 33.78557)
Estimated Travel Time
Distance: 93 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 56m |
| 40 mph (64.37 km/h) | 01h 27m |
| 50 mph (80.47 km/h) | 01h 09m |
| 60 mph (96.56 km/h) | 00h 58m |
| 70 mph (112.65 km/h) | 00h 49m |
| 80 mph (129 km/h) | 00h 43m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.77 | $11.83 | $23.65 |
| Mid-grade | $6.07 | $12.44 | $24.87 |
| Premium | $6.24 | $12.80 | $25.60 |
| Diesel | $7.57 | $15.51 | $31.02 |
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 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.