How far is Fontana, CA from San Marino, CA?
The driving distance from Fontana, CA to San Marino, CA is about 44.6 miles (71.8 km), with a travel time of about 00h 56m by car.
- The straight-line flight distance is about 38.5 miles (61.9 km).
- For a round trip, plan for roughly 01h 52m 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 00h 56m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
City in California
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Fontana and San Marino.
Turn-by-Turn Driving Directions
Step-by-step road directions between Fontana and San Marino.
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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
15.4 mi · 18 min · Foothill Freeway
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10
Take the exit slight right toward CA 19: Rosemead Boulevard, Michillinda Avenue
1441 ft · 19 sec
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11
Keep slight right to continue on Rosemead Boulevard North, Michillinda Avenue
936 ft · 19 sec
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12
Turn right onto Foothill Boulevard
788 ft · 19 sec · Foothill Boulevard
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13
Turn right onto North Michillinda Avenue
1.3 mi · 2 min · North Michillinda Avenue
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14
Turn right onto Huntington Drive
2.3 mi · 4 min · Huntington Drive
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15
Turn slight left
87 m · 8 sec
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16
Arrive at your destination
0 m · 1 sec · San Marino Avenue
Car Route Details
A richer read on the saved driving route between Fontana and San Marino.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Foothill Freeway
Keep slight right to continue on Foothill Freeway
15.4 mi · 00h 18m
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 Fontana and Mostly Sunny near San Marino.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Fontana to San Marino?
The road trip is about 44.6 miles (71.8 km) and usually takes 00h 56m 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?
La Verne is a useful midpoint, sitting about 22.3 miles from Fontana and 22.4 miles from San Marino.
How much longer is the road route than the straight-line distance?
The direct path is about 38.5 miles (61.9 km), while the road route adds roughly 6.1 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 4:38 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $9.06 one way or $18.11 round trip. Estimated CO2 is about 14 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Fontana and Mostly Sunny near San Marino.
Stop Ideas Near La Verne
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Your Home Away From Home
Ayres Hotel Chino Hills
Chino City Hall
Cucamonga Sign Shop LLC
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to La Verne.
Pomona station
Claremont, California
Ontario
Fullerton Transportation Center
Flight Path Map
This map shows the direct air route between Fontana and San Marino. Straight-line distance: 38.46 mi (61.9 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 San Marino
City in California, United States
| Population | 12,786 |
| Coordinates | 34.1214000, -118.1064600 |
| Altitude | 172 |
| Country | United States |
End: San Marino (-118.10646, 34.1214)
Estimated Travel Time
Distance: 72 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 29m |
| 40 mph (64.37 km/h) | 01h 06m |
| 50 mph (80.47 km/h) | 00h 53m |
| 60 mph (96.56 km/h) | 00h 44m |
| 70 mph (112.65 km/h) | 00h 38m |
| 80 mph (129 km/h) | 00h 33m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.77 | $9.06 | $18.11 |
| Mid-grade | $6.07 | $9.52 | $19.05 |
| Premium | $6.24 | $9.80 | $19.60 |
| Diesel | $7.57 | $11.88 | $23.76 |
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.