How far is Rossmoor, CA from Fontana, CA?
The driving distance from Rossmoor, CA to Fontana, CA is about 57.3 miles (92.2 km), with a travel time of about 01h 10m by car.
- The straight-line flight distance is about 42.9 miles (69 km).
- For a round trip, plan for roughly 02h 21m 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 10m.
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.
A city in Los Angeles County, California.
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 Rossmoor and Fontana.
Turn-by-Turn Driving Directions
Step-by-step road directions between Rossmoor and Fontana.
-
1
Start on Kempton Drive
38 m · 11 sec · Kempton Drive
-
2
Turn left onto Foster Road
1.1 mi · 3 min · Foster Road
-
3
Continue on Hedwig Road
928 ft · 30 sec · Hedwig Road
-
4
Turn left onto Wallingsford Road
1047 ft · 48 sec · Wallingsford Road
-
5
Turn left onto West Katella Avenue
1503 ft · 39 sec · West Katella Avenue
-
6
Take the ramp slight right toward I 605 North: San Gabriel River Freeway
1114 ft · 29 sec
-
7
Merge slight left onto San Gabriel River Freeway
19.9 mi · 23 min · San Gabriel River Freeway
-
8
Take the exit slight right toward I 10 West, I 10 East: Los Angeles, San Bernardino
932 ft · 23 sec
-
9
Keep slight right to continue on I 10 East: San Bernardino
1685 ft · 41 sec
-
10
Merge slight left onto San Bernardino Freeway
1 mi · 1 min · San Bernardino Freeway
-
11
Keep slight right to continue on San Bernardino Freeway
2.2 mi · 3 min · San Bernardino Freeway
-
12
Keep slight right to continue on San Bernardino Freeway
2 mi · 2 min · San Bernardino Freeway
-
13
Keep slight right to continue on San Bernardino Freeway
1.1 mi · 1 min · San Bernardino Freeway
-
14
Keep slight right to continue on San Bernardino Freeway
1.5 mi · 2 min · San Bernardino Freeway
-
15
Keep slight right to continue on San Bernardino Freeway
1.4 mi · 2 min · San Bernardino Freeway
-
16
Keep slight right to continue on San Bernardino Freeway
2 mi · 2 min · San Bernardino Freeway
-
17
Keep slight right to continue on San Bernardino Freeway
2.1 mi · 2 min · San Bernardino Freeway
-
18
Keep slight right to continue on San Bernardino Freeway
4 mi · 5 min · San Bernardino Freeway
-
19
Keep slight left to continue on I-10 Metro ExpressLanes
9 mi · 10 min · I-10 Metro ExpressLanes
-
20
Merge slight right onto San Bernardino Freeway
6.5 mi · 7 min · San Bernardino Freeway
-
21
Take the exit slight right toward Sierra Avenue
1191 ft · 29 sec
-
22
Keep slight left to continue on Sierra Avenue North
137 m · 13 sec
-
23
Turn slight left onto Sierra Avenue
1.7 mi · 3 min · Sierra Avenue
-
24
Turn right onto Merrill Avenue
63 m · 4 sec · Merrill Avenue
-
25
Arrive at your destination
0 m · 1 sec · Merrill Avenue
Car Route Details
A richer read on the saved driving route between Rossmoor 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.
San Gabriel River Freeway
Merge slight left onto San Gabriel River Freeway
19.9 mi · 00h 23m
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.
Mostly Sunny leaving Rossmoor and Sunny near Fontana.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Rossmoor to Fontana?
The road trip is about 57.3 miles (92.2 km) and usually takes 01h 10m 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?
Covina is a useful midpoint, sitting about 28.6 miles from Rossmoor and 28.6 miles from Fontana.
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 14.4 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 $11.65 one way or $23.31 round trip. Estimated CO2 is about 18 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Rossmoor and Sunny near Fontana.
Stop Ideas Near Covina
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Your Home Away From Home
Embassy Suites by Hilton Brea North Orange County
City of South El Monte City Hall
Chino City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Covina.
Pomona station
Claremont, California
Ontario
Pasadena, California
Flight Path Map
This map shows the direct air route between Rossmoor and Fontana. Straight-line distance: 42.86 mi (68.98 km).
#1 Rossmoor
Census-designated place in Orange County, California, United States
| Population | 10,244 |
| Coordinates | 33.7855700, -118.0850600 |
| Altitude | 4 |
| 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: 92 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 54m |
| 40 mph (64.37 km/h) | 01h 25m |
| 50 mph (80.47 km/h) | 01h 08m |
| 60 mph (96.56 km/h) | 00h 57m |
| 70 mph (112.65 km/h) | 00h 49m |
| 80 mph (129 km/h) | 00h 42m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.77 | $11.65 | $23.31 |
| Mid-grade | $6.07 | $12.25 | $24.51 |
| Premium | $6.24 | $12.61 | $25.22 |
| Diesel | $7.57 | $15.29 | $30.57 |
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.