How far is San Dimas, CA from Fontana, CA?
The driving distance from San Dimas, CA to Fontana, CA is about 24.5 miles (39.5 km), with a travel time of about 00h 32m by car.
- The straight-line flight distance is about 21.3 miles (34.3 km).
- For a round trip, plan for roughly 01h 04m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM PDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 32m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
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.
The second most populous city in San Bernardino 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 San Dimas and Fontana.
Turn-by-Turn Driving Directions
Step-by-step road directions between San Dimas and Fontana.
-
1
Start on East Bonita Avenue
1201 ft · 30 sec · East Bonita Avenue
-
2
Turn right onto South Walnut Avenue
1296 ft · 38 sec · South Walnut Avenue
-
3
Turn left onto East Arrow Highway
2.7 mi · 4 min · East Arrow Highway
-
4
Turn straight
653 ft · 24 sec
-
5
Turn straight onto West la Verne Avenue
2145 ft · 45 sec · West la Verne Avenue
-
6
Continue on La Verne Avenue
1.2 km · 2 min · La Verne Avenue
-
7
Turn right onto North Towne Avenue
1024 ft · 31 sec · North Towne Avenue
-
8
Turn sharp left onto I 10 East: San Bernardino
1143 ft · 28 sec
-
9
Merge slight left onto San Bernardino Freeway
2.1 mi · 2 min · San Bernardino Freeway
-
10
Keep slight left to continue on I-10 Metro ExpressLanes
9 mi · 10 min · I-10 Metro ExpressLanes
-
11
Merge slight right onto San Bernardino Freeway
6.5 mi · 7 min · San Bernardino Freeway
-
12
Take the exit slight right toward Sierra Avenue
1191 ft · 29 sec
-
13
Keep slight left to continue on Sierra Avenue North
137 m · 13 sec
-
14
Turn slight left onto Sierra Avenue
1.7 mi · 3 min · Sierra Avenue
-
15
Turn right onto Merrill Avenue
63 m · 4 sec · Merrill Avenue
-
16
Arrive at your destination
0 m · 1 sec · Merrill Avenue
Car Route Details
A richer read on the saved driving route between San Dimas and Fontana.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
I-10 Metro ExpressLanes
Keep slight left to continue on I-10 Metro ExpressLanes
9.02 mi · 00h 10m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Sunny leaving San Dimas 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 San Dimas to Fontana?
The road trip is about 24.5 miles (39.5 km) and usually takes 00h 32m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Ontario is a useful midpoint, sitting about 12.2 miles from San Dimas and 12.3 miles from Fontana.
How much longer is the road route than the straight-line distance?
The direct path is about 21.3 miles (34.3 km), while the road route adds roughly 3.2 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 7:00 AM to 7:00 PM PDT. If you want a more comfortable same-day return, try to leave by 7:26 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $5.02 one way or $10.04 round trip. Estimated CO2 is about 7.7 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around San Dimas and Mostly Sunny near Fontana.
Stop Ideas Near Ontario
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Your Home Away From Home
Ayres Hotel Chino Hills
City Hall
Chino City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Ontario.
Ontario
Claremont, California
Pomona station
Riverside–Downtown
Flight Path Map
This map shows the direct air route between San Dimas and Fontana. Straight-line distance: 21.29 mi (34.26 km).
#1 San Dimas
City in California, USA
| Population | 33,165 |
| Coordinates | 34.1066800, -117.8067300 |
| Altitude | 291 |
| 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: 39 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 49m |
| 40 mph (64.37 km/h) | 00h 36m |
| 50 mph (80.47 km/h) | 00h 29m |
| 60 mph (96.56 km/h) | 00h 24m |
| 70 mph (112.65 km/h) | 00h 21m |
| 80 mph (129 km/h) | 00h 18m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.77 | $5.02 | $10.04 |
| Mid-grade | $6.07 | $5.28 | $10.55 |
| Premium | $6.24 | $5.43 | $10.86 |
| Diesel | $7.57 | $6.58 | $13.17 |
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.